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Worksheets

JAY-FORCE

Total questions: 189

Worksheet time: 2hrs 27mins

Name
Class
Date
1.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
2.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
3.
What is the net force?
a)
5 N
b)
45 N to the left
c)
5 N to the right
d)
45 N to the right
4.
Is this and example of a balanced or unbalanced force?
a)
balanced
b)
KITTIES!
c)
unbalanced
d)
pshhh
5.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
6.
Two teams were having a tug of war.  Team A had four people on the team, and each of them pulled with 25N of force.  Team B had three people on the team, and each of them pulled with 35 N of force.  Which team won, and how much greater was their net force on the rope?
a)
Team B by 5 N
b)
Team B by 30 N
c)
Team A by 20 N
d)
Team B by 65 N
7.

What type of force is this man using to push his grocery cart?

a)

Normal Force

b)

Gravity

c)

Air Resistance

d)

Applied Force

8.

What is the net force on the box shown in the picture?

a)

10 N to the left

b)

10 N to the right

c)

60 N to the left

d)

50 N to the right

9.
Calculate the net force shown in the  diagram?
a)
0N
b)
400 N
c)
600 N
d)
800 N
10.

Stretching of a spring describes effect of force on

a)

Change of speed

b)

Change of shape

c)

Change of direction

d)

All the above

11.

Moon orbiting around Earth is due to?

a)

Contact force

b)

Non contact force

c)

Balanced force

d)

Unbalanced force

12.

While you are playing with magnets ,we observe that like poles repel. It is due to

a)

Contact forces

b)

Non contact forces

c)

Unbalanced

d)

Balanced

13.

Why playing cricket is an example of muscular contact force?

a)

We hit the ball using or hand

b)

We hit the bat using our hand

c)

We hit the ball using the bat, held in our hands

d)

Bat hits the ball without any help from hand

14.

A moving object can be brought to rest by?

a)

Applying force in same direction

b)

Applying force in opposite direction

c)

By not applying any force

15.

Which of the following does not satisfy requirement of non-contact force?

a)

Gravity

b)

Friction

c)

Magnetic

d)

Electrostatic

16.

A force is a _____

a)

push

b)

pull

c)

Both push and pull

d)

Object

17.

When we throw anything in air it always falls down because of _____

a)

Friction

b)

Gravity

c)

Solid

d)

motion

18.

If negative charge is developed on two objects they will__

a)

attract each other

b)

repel each other

19.

Which force acts backwards and prevent us form slipping on a wet floor?

a)

Gravitational force

b)

Magnetic force

c)

Frictional force

d)

Electrostatic force

20.

In what condition the magnetic poles attract each other?

a)

South-South

b)

North-North

c)

North-South

d)

All of the above

21.

When you rub your hand heat energy is generated because of _____

a)

Magnetism

b)

Muscular force

c)

Electrostatic force

d)

Friction

22.

Force can __

a)

Change only direction

b)

Change only speed

c)

Change only shape

d)

All of the above

23.

A water tank which is kept 10 feet high has more potential energy than a tank kept at 5 feet.

a)

True

b)

False

24.

Q1. Push or pull acting upon any object as a result of an interaction is

a)

wt

b)

force

c)

mass

d)

none

25.

Q2. Which of the following is not the effect of force?

a)

Force can change the shape of object.

b)

Force can change the size of the object.

c)

Force can change the mass of an object.

d)

Force can stop a moving object.

26.

Q3. If heavy objects are made to roll _______friction comes into play.

a)

sliding friction

b)

rolling

c)

static friction

d)

kinetic friction

27.

Q4. Which is not the advantage of friction?

a)

Friction helps in walking.

b)

Friction allows us to write on paper.

c)

Cars and buses move safely on roads due to friction.

d)

Friction causes wear and tear.

28.

Q5. Odd one out: polishing , washing , providing ball bearings

a)

washing

b)

polishing

c)

providing ball bearings

29.

Q6. A horse pulling a cart is a

a)

frictional force

b)

muscular force

c)

gravitational force

30.

Q7. Interaction between different types of charges is

a)

electrostatic force

b)

muscular force

c)

frictional force

31.

Q8. Tyres of vehicles have grooved designs to

a)

reduce friction

b)

increase friction

32.

Q9. The friction caused due to fluids such as water and air is termed as

a)

kinetic friction

b)

static friction

c)

drag

d)

none of the above

33.

Q10. Non - contact forces are also called as

a)

contact forces

b)

action -at - a - distance forces

34.

Q11. Gravitational forces, magnetic forces and electrostatic forces are examples of :

a)

Contact forces

b)

Non- contact forces

c)

Both

d)

None

35.

Q12. Friction can be increased by increasing the ________of the surfaces in contact.

a)

Smoothness

b)

Area

c)

Roughness

d)

None of the above

36.

Q13. The friction which occurs when the applied force overcomes static friction and the object starts moving is:

a)

Static friction

b)

Kinetic friction

c)

Rolling friction

d)

Sliding friction

37.

Q14. A man puts wheels in his suitcase. It becomes easy for him to move his suit case. Which friction comes into play?

a)

Sliding friction

b)

Rolling friction

c)

Both of the above

d)

None of the above

38.

Q15. Odd one out: a player kicking a ball, a horse pulling a cart, interaction between different charges, person lifting a suitcase.

a)

interaction between different charges

b)

a player kicking a ball

c)

a horse pulling a cart

d)

person lifting a suitcase.

39.

Q15 Ball bearings are provided between wheel and axle to

a)

increase friction

b)

reduce friction

c)

none of the above

40.

Q17. A car can skid on the wet road due to:

a)

Increased friction between the road and tyres.

b)

reduced friction between the road and tyres.

c)

None of the above.

41.

Q18. A ______ attracts iron pieces towards itself.

a)

Iron nail

b)

Pins

c)

Magnet

d)

None of the above

42.

Q19. When the weight remains same, friction is independent of the ______ of surface in contact.

a)

Mass

b)

Length

c)

Area

d)

None of the above

43.

Q20. Friction wears down the parts of machines.

a)

True

b)

False

44.

What is force?

a)

Push or Pull

b)

Lift or Drop

c)

The phenomenon in which an object changes its position over time.

d)

None of the above

e)

All of the above

45.

Describe motion........

a)

When an object is in movement

b)

An object in movement

c)

Mobility

46.

Who created the three laws of motion?

a)

Alexander the great

b)

Albert Einstein

c)

Alexander Graham Bell

d)

Sir Isaac Newton

47.

A change in an object's position, direction or location.Which word does this describe?

a)

Position

b)

Force

c)

Inertia

d)

Motion

48.

The measurement of distance over time. What word does this describe?

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

e)

Distance

49.

When you leave a ball on the field and come back after sometime,it has moved. Which law of motion happened to that ball?

a)

Newton's first law

b)

Newton's second law

c)

Newton's third law

d)

All laws

e)

None of the laws

50.

What is Newton's second law of motion?

a)

Force= mass x acceleration

b)

Acceleration=mass x force

c)

Mass=Acceleration x force

d)

None of the above. These are not any of Newton's laws

51.

When you let go of a blown balloon,which law has occurred?

a)

Newton's first law

b)

Newton's second law

c)

Newton's third law

d)

None

e)

All

52.

The measurement of speed and direction of an object

a)

Inertia

b)

Speed

c)

Velocity

d)

Acceleration

53.

A change in an objects speed or direction

a)

Speed

b)

Acceleration

c)

Force

d)

Gravity

e)

Friction

54.

A force that attracts objects to the center of the Earth

a)

Gravity

b)

Friction

c)

Sun

d)

Earth's core

55.

A force that resists the movement of one surface past another surface

a)

Friction

b)

Acceleration

c)

Lubricant

d)

Inertia

56.

The tendency of an object to resist any change in motion.

a)

Momentum

b)

Inertia

c)

Net force

d)

Motion

57.

the path of an object as it moves

a)

Direction

b)

Push

c)

Pull

d)

Inertia

58.

How far an object moves

a)

Distance

b)

Direction

c)

Both

d)

None

59.

What is stored energy?

a)

Net force

b)

Potential energy

c)

Kinetic energy

d)

None of the above

60.

Which energy is shown in the picture?

(a)  

61.

The diagram shows 2 boxes with forces being applied to them. In the diagram, force (F) is shown in newtons (N), acceleration (a) is shown in meters/second2 (m/s2), and the mass is shown in grams (g).

Which statement is supported by the diagram?

a)

As the mass of an object increases, the force required for it accelerate decreases.

b)

As the mass of an object decreases, the force required for to accelerate increases.

c)

Heavier objects require more force than lighter objects to accelerate at the same rate.

d)

Heavier objects require less force than lighter objects to accelerate at the same rate.

62.
a)
Balanced
b)
Unbalanced
63.
The boat moves to the left at a speed of 4 m/s. The current moves to the right at 2 m/s. What will happen if the current increases to 3 m/s?
a)
The boat will speed up.
b)
The boat will slow down. 
c)
The boat will move backwards.
d)
The boat will continue sailing to the left at a constant speed of 4 m/s.
64.

A ___________ is a push or a pull that causes an object to move.

a)

force

b)

speed

c)

energy

d)

direction

65.

___________ is an opposing force that makes objects in motion slow down.

a)

force

b)

speed

c)

friction

d)

mass

66.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

67.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
68.

How much force should be added to this object to bring it to equilibrium?

a)

15N to the right

b)

5N to the left

c)

5N to the right

d)

25N on top of the box

69.

What is 'inertia of direction?'

4 lines
70.

Which has more inertia, a cricket ball or a rubber ball of the same size ? Give reason for your answer.

4 lines
71.

Why is it difficult for a fireman to hold a hose, which ejects large amount of water at a high velocity.

4 lines
72.

A man pushes a box of mass 50 kg with a force of

80 N. What will be the acceleration of the box due

to this force ? What would be the acceleration if

the mass were doubled ?

4 lines
73.

A motorcar of mass 1200 kg is moving along a straight line with a uniform velocity of 90 km/h. Its velocity is slowed down to 18 km/h in 4 s by an unbalanced external force. Calculate the acceleration and change in momentum. Also calculate the magnitude of the force required.

4 lines
74.

A body of mass 1 kg is kept at rest. A constant force of 6 N starts acting on it. Find the time taken by the body to move through a distance of 12 m.

4 lines
75.

A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of 400 m in 20 s. Find its acceleration. Find the force acting on it if its mass is 7 tonnes.

4 lines
76.

We apply _________ to the hinges

a)

Grease

b)

Oil

c)

Powder

d)

None of these

77.

To reduce friction, we need to make the surfaces

(a)  

78.

Correct the unscramble word- ATTCONC RCEOF (don't write answer in capital letters.)

(a)  

79.

True or false- The frictional force is a motion force

a)

True

b)

False

80.

Friction __________ a moving object

a)

Pulls

b)

Slow down

c)

Stops

d)

None of these

81.

(a)   is applied on a carrom board to reduce friction.

82.

Due to friction (a)   is produced which makes our hands warm.

83.

Which of these is a lubricant?

a)

Oil

b)

Magnet

c)

Carrom striker

d)

Hinges of doors

84.

Correct the unscramble word- IRTANCUBL

(a)  

85.

The shape of vehicles is made (a)   to reduce friction.

86.
Calculate the net force of the object in the image shown.
a)
20N
b)
35N
c)
5N
d)
25N
87.
Is this a balanced or unbalance force?
a)
Balanced
b)
Unbalanced
c)
Neither one
d)
Both
88.
Which direction will the object move?
a)
Up
b)
Down
c)
Right
d)
Left
89.
Calculate the net force of the object.
a)
10N
b)
2N
c)
15N
d)
5N
90.
Is this a balanced or unbalanced force?
a)
Balanced
b)
Unbalanced
c)
Neither
d)
Both
91.
Which direction will the object move?
a)
Right
b)
Left
c)
Up
d)
Down
92.
What is the net force of this object?
a)
0N
b)
50N
c)
25N
d)
5N
93.
Is this a balanced or unbalanced force?
a)
Balanced
b)
Unbalanced
c)
Neither
d)
Both
94.
This model shows the forces applied to a box.  However, this model DOES NOT show ________________________.
a)
the forces acting in opposite directions
b)
that the forces are unequal
c)
that student B is pushing harder
d)
the actual amount of the forces
95.
If a force causes an object to move, it's considered a(n) __________________ force.
a)
Balanced
b)
Unbalanced
c)
Massive
d)
Strong
96.
Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?
a)
The ribbon will move to the left and group A will win the tug-of-war.
b)
The ribbon will move to the left and group B will win the tug-of-war.
c)
The ribbon will move to the right and group B will win the tug-of-war.
d)
The ribbon will move to the right and group A will win the tug-of-war.
97.
If a force causes an object to start moving, stop moving, or change direction it's considered a(an)__________________force.
a)
Balanced
b)
Unbalanced
c)
Magnetic
d)
Gravitational
98.
A cyclist traveling at 25 km/hr turns sharply to the left while continuing to move 25 km/hr. This means the forces involved are_____________________.
a)
Balanced, because the cyclist's speed did not change.
b)
Balanced, because he was still moving forward.
c)
Unbalanced, because it's the same bicycle.
d)
Unbalanced, because his direction changed.
99.
The forces represented by the arrows in the diagrams are applied to the four objects that are at rest on a table. Which object is most likely to move to the right?
a)
Object W
b)
Object X
c)
Object Y
d)
Object Z
100.
The forces represented by the arrows in the diagrams are applied to the four objects that are at rest on a table. Which object is most likely to remain in place?
a)
Object W
b)
Object X
c)
Object Y
d)
Object Z
101.
If a force does not cause an object to move, it's considered a(n) __________________ force.
a)
Balanced
b)
Unbalanced
c)
Wimpy
d)
Weak
102.
An airplane is travelling North through the sky at a constant speed when turbulence causes it to take a different route, changing its direction. Explain the forces at work on this plane.
a)
Unbalanced, because the plane is moving forward, not backwards
b)
Unbalanced, because the speed is constant and there is a change in direction
c)
Balanced, because the plane is not falling to a lower altitude
d)
Unbalanced, because the plane is in motion
103.
An airplane is travelling at a constant speed of 540 mph.  Explain the forces at work on the plane.
a)
Unbalanced, because the plane is moving forward not backards
b)
Balanced, because the speed is constant and there is no change in direction
c)
Balanced, because the plane is not falling to a lower altitude
d)
Unbalanced, because the plane is in motion
104.
Imagine a bat swinging with a force of 1200 N, hitting a ball pitched with a force of 400 N. At what net force does the ball move away from the bat?
a)
1600 N
b)
800 N
c)
400 N
d)
Net force of 0 N
105.
The roller coaster car begins at point W.  At what point along the track will the car have the greatest amount of kinetic energy?
a)
W
b)
X
c)
Y
d)
Z
106.

What is force?

a)

A push exerted on an object

b)

A push or pull exerted on an object

c)

A pull exerted on an object

d)

None of the above

107.

At the start of a football game, a footballer kicks a ball placed in the middle of the field to move the ball.

What is the effect of force on the object?

a)

Change the direction of a moving object

b)

Make a moving object stop

c)

Make a moving object move slower

d)

Make a stationary object move

108.
Striking a moving tennis ball:
changes its _____ and _____ .
a)
direction, speed
b)
speed, shape
c)
shape, speed
d)
shape, direction
109.
In a football game, the footballers kick the rolling ball to make it move even faster.
What is the motion of the object?
a)
Change the direction of a moving object
b)
Make a moving object stop
c)
Make a moving object move faster
d)
Make a stationary object move
110.

A push is ______________.

a)

a force to move something away

b)

a force to move something towards you

c)

gravitational potential energy

d)

kinetic energy

111.

A pull is ________________.

a)

a force to move something away

b)

a force to move something towards you

c)

gravitational potential energy

d)

kinetic energy

112.

which of the following is not an effect of force:

a)

to move a body from rest

b)

to stop a moving body

c)

to change the colour of an object

d)

to change the shape of a body

113.

in the given figure force is

a)

changing the direction of motion

b)

changing the shape

c)

stopping a moving object

d)

none of the above

114.

This is an example of what force?

a)

push

b)

pull

c)

magnetic

d)

gravitational

115.

This is an example of what force?

a)

gravitational

b)

push

c)

pull

d)

magnetic

116.
In a football game, the goalkeeper stops a moving ball to prevent it from entering the goal.
What is the motion of the object?
a)
Change the direction of a moving object
b)
Make a moving object stop
c)
Make a moving object move slower 
d)
Make a stationary object move
117.

Name the force operating between planets and their satellites.

a)

Frictional

b)

Gravitational

c)

Electrostatic

d)

all of the above

118.

Force is necessary to change ________ and ________ of an object.

a)

weight and shape

b)

direction and weight

c)

speed and weight

d)

shape and direction

119.

Who discovered about gravity/gravitation in the 17th century?

a)

sir Isaac Newton

b)

Galileo

c)

Shakespeare

120.

(a)   is necessary to change the shape of an object.

121.

Can we determine the weight of an object by hanging it from the hook of a spring balance.

a)

True

b)

False

122.

A person slips and falls on the floor due to lack of _________force.

a)

muscular

b)

frictional

c)

magnetic

123.

No object changes its position on its on.

a)

Agree

b)

Disagree

124.

What is mechanical force?

a)

the force applied by earth to pull objects to itself

b)

the force applied with the help of muscles

c)

the applied by the means of machines.

d)

all of the above

125.

Greater force most be applied to lift a greater weight.

a)

correct

b)

incorrect

126.

Find the odd one out.

a)

magnetic force

b)

muscular force

c)

random force

d)

frictional force

127.
Which will cause a moving object to change direction?
a)
Force
b)
Gravity
c)
Inertia
d)
Speed
128.

as the mass of an object increases, the pull of gravity...

a)

Increases

b)

Decreases

c)

Stays the same

129.

If a feather and a hammer are dropped at the same time on the moon, where there is no atmosphere, which one will hit the ground first?

a)

Neither, there is no gravity on the moon.

b)

hammer because it has more mass

c)

feather because it has less mass

d)

both will hit at the same time, there is no wind resistance

130.
What is gravitational force?
a)
It makes objects at rest start moving.
b)
It makes objects that are moving stop.
c)
The force of attraction between two objects.
d)
It pulls you into space.
131.

A force is a _____

a)

push

b)

pull

c)

Both push and pull

d)

Object

132.

When we throw anything in air it always falls down because of _____

a)

Friction

b)

Gravity

c)

Solid

d)

motion

133.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
134.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
135.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
136.

The frictional force (a)   caused the boy to fall.

137.

Anytime two surfaces of objects rub each other, they cause _ _ _ _ _ _ _ _.

(a)  

138.

Friction produces _____________ to keep ourselves warm or to start a fire.

a)

heat

b)

heart

c)

helium

d)

hexagon

139.

Smooth surfaces have ...

a)

more friction

b)

less friction

c)

the same level of friction

140.

There are corrugations on the tyre because they ___________.

a)

increase the stopping distance of the car

b)

reduce the amount of material used

c)

increase friction

141.

The rougher the surface, the greater the frictional force of the object.

a)

True

b)

False

142.
The SI Unit of force is
a)
Pascal
b)
Meter/second
c)
Newton
d)
kg
143.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced?
a)
12 N Right;  No
b)
4 N Left;  No
c)
12 N Right;  Yes
d)
4 N Left;  Yes
144.
Which one is balanced?
a)
top
b)
bottom
c)
both
d)
neither
145.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
146.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
147.
How do you calculate Net Force if the forces are going different directions?
a)
add them together
b)
you don't
c)
using pi
d)
subtract them
148.

What force ultimately slows the roller coaster to a stop?

a)

Applied

b)

Normal

c)

Friction

d)

Gravitational

149.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
150.

Rina’s mother asked her to help move some items from the hall closet to the garage. One item she wanted to move was a large box of old school books. Rina tried to lift the box, but could not pick it up. What force was Rina NOT able to overcome?

a)

frictional force

b)

gravitational force

c)

applied force

d)

normal force

151.

Leanna decided to rearrange her bedroom by moving her dresser to the opposite wall. She tried pushing it, but found that the dresser would not move. What force was Leanne NOT able to overcome?

a)

normal force

b)

gravitational force

c)

tension force

d)

frictional force

152.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
153.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
154.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
155.
How would the absence of friction affect a marble traveling on a long, straight path?
a)
The marble’s speed would decrease.
b)
The marble’s speed would increase.
c)
The marble would stop immediately. 
d)
The marble would remain at constant speed.
156.

6.8B- An image of a toy rocket and forces are shown below. Assuming the only two forces on the toy rocket are lift and gravity, which of the following combinations would result in the rocket moving upward?

a)

Lift= 5 Newtons / Gravity = 5 Newtons

b)

Lift = 3 Newtons / Gravity = 4 Newtons

c)

Lift = 5 Newtons / Gravity = 4 Newtons

d)

Lift = 4 Newtons / Gravity = 4 Newtons

157.

To determine mass of object in kg, you would _______.

a)

divide gravitational force by 9.8 m/s/s

b)

multiply gravitational force by 9.8 ms/s/s

158.

What is the common name for gravitational force?

a)

normal force

b)

acceleration due to gravity

c)

weight

d)

mass

159.

What is the magnitude of acceleration of the tennis ball thrown vertically up in the air at its highest position?

a)

zero

b)

9.8 m/s2

c)

19.6 m/s2

d)

depends on the height

160.

Which is most likely needed when describing the change in position of an object?

a)

initial speed

b)

direction change

c)

reference point

d)

constant rate

161.

Which graph could represent a car moving at a constant speed in a forward direction?

a)
b)
c)
d)
162.

Which of the following is a non-contact force

a)

elastic force

b)

friction

c)

electrostatic force

d)

applied force

163.

Which of the following is not an effect of force?

a)

It can change the position of an object.

b)

It can change the mass of an object.

c)

It can change the speed of an object.

d)

It can change the size of an object.

164.

Just by looking at the picture, which of the following statements will be true?

a)

The object will move to the right.

b)

The object will move to the left.

c)

The object will not move as the forces are balanced.

d)

The forces are unbalanced.

165.

Which of the following options can be concluded by looking at the picture? The car has just started moving.

a)

There is a force of friction of 1000 N.

b)

The car exerting a force of 10000 N to move.

c)

The car will slow down, and the resultant force will be 9000 N.

d)

All of the above.

166.

The resultant force acting on the car would be

a)

13000 N to the left

b)

13400 N to the left

c)

13600 N to the right

d)

13400 N to the right.

167.

The friction experienced by an object when it is moving is called

a)

Static friction

b)

Kinetic friction

c)

Dynamic friction

d)

moving friction

168.

No matter where we go in the Universe, the mass of the object is always

a)

a constant

b)

changing

169.

Which of the following is a contact force

a)

Gravity

b)

Magnetic force

c)

Electrostatic force

d)

friction

170.

The reading on a set of weighing scales is 5 kg. What force is pressing on the scales? (the g on Earth is 10 m/s2)

a)

50 N

b)

500 N

c)

5 N

d)

None of the above.

171.

We will feel weightless

a)

on Earth

b)

on Moon

c)

in Space

d)

near a black hole

172.

The sum of all of the forces acting on an object is known as the (a)   force.

173.

Do directions matter with forces?

(a)  

174.

When forces are acting in the same direction they should be added together.

a)

True

b)

False

175.

Forces that are acting in opposite directions should be subtracted from each other.

a)

True

b)

False

176.

If the net force (Fnet) is 0, _____

a)

the forces are balanced.

b)

the object just keeps doing what it was doing.

c)

the object maintains its same speed and direction.

d)

the object maintains its velocity.

e)

the object does not speed up, slow down, or turn.

177.

If the net force is not 0, _____

a)

the forces are not balanced.

b)

the object changes what it is doing.

c)

the object changes its velocity.

d)

the object accelerates.

178.

The net force (Fnet) and the acceleration are always in the same direction.

a)

True

b)

False

179.

If the acceleration and velocity are in the same direction the object will _____.

a)

speed up

b)

slow down

c)

turn

180.

If the acceleration and the velocity are in opposite directions, the object will _____.

a)

speed up

b)

slow down

c)

turn

181.

If the acceleration and velocity are at angles to each other, the object will _____.

a)

speed up

b)

slow down

c)

turn

182.

The net force acting on the object is acting _____.

a)

to the right

b)

to the left

c)

up

d)

down

183.

The net force (Fnet) acting on the object is (a)   N.

184.

If the velocity of the object is to the right, the object will _____.

a)

speed up

b)

slow down

c)

turn

185.

If the velocity of the object is to the left, the object will _____.

a)

speed up

b)

slow down

c)

turn

186.

Which of the following are ways to accelerate?

a)

speed up

b)

slow down

c)

turn

187.

Velocity has both _____ and _____.

a)

mass and direction

b)

speed and acceleration

c)

speed and direction

188.

The net force acting on the block is (a)   N.

189.

This block will _____.

a)

change its motion

b)

accelerate

c)

change its velocity

d)

keep on doing what it is already doing

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