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Worksheets

Forces of Motion

Total questions: 93

Worksheet time: 7hrs 43mins

Name
Class
Date
1.

Newton's Law of Inertia (first law) describes the motion of-

a)
Objects at rest only
b)
Objects in motion only
c)
Objects at rest and objects that are in motion
d)

Objects that accelerate

2.
The tendency of an object to resist a change in motion is...
a)
inertia
b)
kinetic energy
c)
vector
d)
net force
3.

Because of inertia, a moving object will keep ________ unless acted on by an unbalanced force.

a)

at rest

b)

moving

c)

in one spot

d)

inertia

4.

Newton's Third Law States that..?

a)

Objects in motion stay in motion and objects at rest stay at rest.

b)

Force is equal to mass times acceleration.

c)

For each action, there is an equal and opposite reaction.

5.

A baseball player bats a ball with a force of 1,000N. The ball exerts a reaction force against the bat of...

a)

1,000N in the opposite direction

b)

Less than 1,000N

c)

More than 1,000N

d)

Only 500N

6.

Name the action - reaction pair.

If the fist hits the wall, then..

(a)  

7.

For every action, there is...

a)

an equal and opposite reaction.

b)

mass times acceleration.

c)

food and water.

d)

none of the above.

8.

A football player kicks a 0.5 kg ball with an unknown force it accelerates by 3.0 m/s^2. What is the force of the kick?

(a)  

9.

What does the F in the F=m x a equation stand for?

a)

Mass

b)

Force

c)

Acceleration

d)

Pressure

10.

A 14.0 kg cart is being pushed with 538 N of force. What is the acceleration of the cart?

a)

28.4 m/s^2

b)

39 m/s^2

c)

38.4 m/s^2

d)

40 kg

11-12.

Answer the questions below after watching the video

11.

What does Newton's First law of motion state?

4 lines
12.

Why does the camera and the astronaut fly backwards towards the camera recording?

a)

The acceleration experienced by the rocket makes the objects move upwards

b)

The acceleration experienced by the rocket makes the objects fly in the same direction as thrust

c)

Since only the rocket accelerates the rest of the objects stay in place

d)

Since the rocket and the objects accelerate the objects move with the rocket

13.

The girl on the sled will remain in motion in the same direction unless

a)

her motion is changed by magnetic forces.

b)

she is stopped by an unbalanced force.

c)

she accelerates at a constant speed.

d)

the force of friction forcer her to move faster.

14.
Which law describes this picture?
a)
Newton's First Law
b)
Newton's Second Law
c)
Newton's Third Law
15.

When the force on a car is doubled, the acceleration is doubled.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

16.

Which law best explains why more force must be applied to the bowling ball to make it accelerate at the same rate as the tennis ball.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

17.

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

a)

The cannon moving forward

b)

The cannon moving backwards

c)

The cannonball moving backwards

d)

The cannonball moving forward

18.

A skater pushes another skater forward, but the one pushing moves backwards. Explain which of the laws describes this and why does each of the skaters received a different acceleration.

4 lines

19-28.

Answer the questions below after watching the video

19.

What is the role of gravity when a boy is standing still?

a)

It pushes him upwards

b)

It pulls him downwards

c)

It spins him around

d)

It has no effect

20.

What happens to the motion of an object when balanced forces act on it?

a)

It stays still

b)

It moves faster

c)

It slows down

d)

It remains in motion

21.

What happens when two equal and opposite forces act on an object?

a)

The object rotates

b)

The object vanishes

c)

The object remains stationary

d)

The object moves in the direction of the stronger force

22.

What is required for an object to start moving?

a)

Balanced forces

b)

Magnetic forces

c)

Unbalanced forces

d)

No forces

23.

In a tug of war, what determines if the rope moves?

a)

The rope's length

b)

Equal force on both sides

c)

Greater force on one side

d)

The type of rope used

24.

What causes a ball at rest to start moving?

a)

Wind

b)

Balanced forces

c)

A push or kick

d)

Gravity alone

25.

What happens when the force of a kick on a ball becomes equal to other forces acting on it?

a)

The ball accelerates

b)

The ball stops

c)

The ball changes direction

d)

The ball disappears

26.

Why does a ball stop moving after being kicked?

a)

It hits an obstacle

b)

Balanced forces act again

c)

It deflates

d)

Loss of air

27.

What ensures that a seesaw stays balanced?

a)

Equal weights on both sides

b)

Different weights on each side

c)

No weight on either side

d)

Continuous motion

28.

What is the effect of unbalanced forces on a seesaw?

a)

It levitates

b)

It breaks

c)

It moves towards the heavier side

d)

It remains horizontal

29.

Thomas is pushing a shopping cart with a certain mass at an acceleration. According to Newton's second law of motion, what is the equation that relates the force Thomas applies, the mass of the cart, and the acceleration of the cart?

a)

F=m+aF = m + a

b)

F=maF = \frac{m}{a}

c)

F=maF = ma

d)

F=amF = \frac{a}{m}

30.

The force that pulls objects toward the center of the Earth is called:

a)

Magnetic force

b)

Gravitational force

c)

Electric force

d)

Nuclear force

31.

What is the primary effect of unbalanced forces acting on an object?

a)

The object moves in a circular path

b)

The object's velocity remains constant

c)

The object accelerates

d)

The object levitates

32-41.

Answer the questions below after watching the video

32.

What does Newton's first law, also known as the law of inertia, state?

a)

For every action, there is an equal and opposite reaction.

b)

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

c)

The force on an object is equal to its mass times its acceleration.

d)

An object will change its motion if a force acts upon it.

33.

What is inertia?

a)

The force required to accelerate an object.

b)

The tendency of an object to resist changes in its velocity.

c)

The gravitational pull on an object.

d)

The speed of an object in motion.

34.

How is net force related to mass and acceleration according to Newton's second law?

a)

Net force is the product of mass and velocity.

b)

Net force is the product of mass and acceleration.

c)

Net force is the difference between mass and acceleration.

d)

Net force is the sum of all external forces acting on an object.

35.

What role does mass play in Newton's second law of motion?

a)

Greater mass results in greater net force for the same acceleration.

b)

Greater mass means less acceleration for the same force.

c)

Mass is inversely proportional to force.

d)

Mass has no effect on the acceleration of an object.

36.

What is the acceleration due to gravity on Earth's surface?

a)

10 m/s^2

b)

9.81 m/s

c)

9.81 m/s^2

d)

10 m/s

37.

How can the force of gravity be calculated?

a)

Adding mass to the acceleration due to gravity.

b)

Dividing mass by the acceleration due to gravity.

c)

Multiplying mass by the acceleration due to gravity.

d)

Subtracting the acceleration due to gravity from the mass.

38.

According to Newton's third law, what happens when you exert a force on an object?

a)

The object accelerates in the opposite direction.

b)

The object's mass increases.

c)

The object exerts an equal force back on you.

d)

The object moves in the direction of the force.

39.

What is the normal force?

a)

The force of gravity acting on an object.

b)

The force that acts parallel to the surface.

c)

The force exerted by an object moving in a circular path.

d)

The force acting perpendicular to the surface an object rests on.

40.

What does a free body diagram represent?

a)

The acceleration of an object.

b)

All the forces acting on an object and their directions.

c)

The velocity of an object.

d)

The net force acting on an object.

41.

What determines the tension in a rope holding a suspended object?

a)

The mass of the object and the acceleration due to gravity.

b)

The length of the rope.

c)

The thickness of the rope.

d)

The material of the rope.

42.

What does Newton's First Law of Motion state?

a)

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

b)

The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

c)

For every action, there is an equal and opposite reaction.

d)

The force of gravity acting on an object is directly proportional to its mass.

43.

What is inertia?

a)

The force that keeps an object moving in a circle

b)

The tendency of an object to resist changes in its velocity

c)

The force that pulls objects toward the center of the Earth

d)

The reaction force that occurs in response to an action force

44.

What is the formula for calculating the force applied to an object, according to Newton's Second Law of Motion?

a)

F=maF = ma

b)

F=maF = \frac{m}{a}

c)

F=m+aF = m + a

45.

Which of Newton's Laws explains the principle of action and reaction?

a)

First Law

b)

Second Law

c)

Third Law

46.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite

47-56.

Answer the questions below after watching the video

47.

What do Newton's Laws help us understand?

a)

How water flows

b)

How plants grow

c)

How stars shine

d)

How objects move

48.

What is another name for Newton's First Law?

a)

Law of Energy

b)

Law of Motion

c)

Law of Inertia

d)

Law of Gravity

49.

According to Newton's First Law, what happens to an object at rest?

a)

It changes shape

b)

It disappears

c)

It starts moving on its own

d)

It remains still unless moved

50.

Why does it take less force to move a bike than a car?

a)

Because a bike is smaller

b)

Because a bike is faster

c)

Because a bike has more wheels

d)

Because a bike is lighter

51.

What happens when you throw a ball against a wall?

a)

It bounces back

b)

It changes color

c)

It breaks

d)

It sticks to the wall

52.

What is motion?

a)

When something changes its position

b)

When something changes its color

c)

When something gets bigger

d)

When something makes a sound

53.

What is force?

a)

A type of sound

b)

A type of energy

c)

A type of motion

d)

An action that causes movement or shape change

54.

What happens when Joan lifts a box?

a)

The box changes color

b)

The box changes place

c)

The box makes a sound

d)

The box gets bigger

55.

What is acceleration?

a)

When something changes color

b)

When something makes a sound

c)

When something speeds up or slows down

d)

When something changes its shape

56.

How can Newton's Laws help us?

a)

To understand the weather

b)

To understand how things move

c)

To understand how plants grow

d)

To understand how stars shine

57.

Based on Newton’s first law of motion, what happens when you slide forward on ice?

a)

You will lose your balance and fall over before you reach the middle.

b)

You will continue to slide until a force makes you stop or change direction.

c)

Gravity keeps you moving until someone makes you stop.

d)

The size of your ice skates affects your speed across the ice.

58.
How is velocity different from speed?
a)
Velocity is when an object goes in reverse.
b)
Velocity is the direction an object moves in, and it has nothing to do with speed.
c)
Velocity is speed and direction together.
d)
Velocity is not at all different from speed.
59.

What does friction do to a moving object?

a)

slows it down

b)

speeds it up

c)

makes it rise

d)

all of the above

60.

What needs to happen to a soccer ball for it to return to someone?

a)

Friction has to be applied to the ball.

b)

Force has to be applied to the ball.

c)

Speed has to be applied to the ball.

d)

Inertia has to be applied to the ball.

61.
What is the relationship between heavy objects and inertia?
a)
Only heavy objects have inertia.
b)
Heavy objects have no inertia.
c)
Heavy objects have less inertia.
d)
Heavy objects have more inertia.
62.
You are riding in the car with your grandfather, and he turns left. Why do you shift to the right?
a)
It takes you a moment to catch up with the new velocity of the car.
b)
You have more inertia than the car, so it takes longer for you to turn left.
c)
You had been sitting at rest until the force of the turn set you in motion.
d)
The car continued in the same velocity, but you had a different inertia.
63.
What does the second part of Newton’s first law say about objects at rest?
a)
They cannot move unless they have a lot of friction.
b)
If they are heavy, they will stay at rest, but if they are light, they will move.
c)
They will stay at rest unless an outside force makes them move.
d)
They have more inertia than objects in motion.
64.
Your neighbor is riding her bike around the block. When she slows down and turns a corner, what changes about her?
a)
her velocity
b)
her friction
c)
her speed only
d)
her balance
65.

What is the rate at which an object’s velocity changes called?

a)

inertia

b)

actualization

c)

acceleration

d)

completion

66.

What is inertia?

a)

the amount of force to start moving an object at rest

b)

an object’s velocity and its friction

c)

what keeps an object steady, at rest or moving consistently

d)

the friction needed to slow an object in motion

67.
Your skateboard begins to slow down when you roll off the sidewalk and across gravel. What is at work?
a)
gravity
b)
friction
c)
balance
d)
all of the above
68.
What can be measured by acceleration?
a)
how much an object slows down
b)
how much an object speeds up
c)
an object’s change in direction
d)
all of the above
69.
Your dog’s wagging tail knocks over the cup of pencils sitting on your desk. What kind of force is his tail?
a)
an unbalanced force
b)
an inert force
c)
gravitational force
d)
friction
70.
If a hockey stick acts on a resting puck, what will happen?
a)
The puck will remain inert and the hockey stick will accelerate.
b)
The puck will balance on the end of your hockey stick until you drop it.
c)
The hockey stick will not move the puck, but the puck will move the hockey stick.
d)
The hockey stick will change the speed of the puck and make it accelerate
71.
Every time your cat’s paw hits her toy string, it swings away from her. How does this demonstrate Newton’s third law of motion?
a)
Objects with mass, such as your cat’s paw and toy string, will require inertia.
b)
Objects in action, such as the string toy, will experience force.
c)
For every motion from your cat’s paw, there is unbalanced inertia from the string.
d)
For every action your cat makes, there is an equal and opposite reaction from the string
72.
What happens when two objects, such as a baseball and a bat, collide?
a)
One remains still while the other one moves in the same direction.
b)
They hit each other with the same force in opposite directions.
c)
They hit each other with unequal force in opposite directions.
d)
They hit each other with the same force in the same direction.
73.
What does an object do when it accelerates?
a)
It speeds up.
b)
It moves in the opposite direction.
c)
It changes speed and direction.
d)
all of the above
74.
What determines an object’s mass?
a)
amount of matter
b)
amount of friction
c)
amount of force
d)
amount of gravity
75.

When two objects with unequal mass collide, what happens?

a)

accelerate at different rates

b)

accelerate in the same direction

c)

come to a complete stop

d)

continue at the same velocity

76.
A softball and a volleyball collide with equal speed, and then they accelerate at the same rate. What must be true about the masses of the objects?
a)
The softball has more mass than the volleyball.
b)
The softball and the volleyball have equal mass.
c)
The volleyball has more mass than the softball.
d)
It is impossible to compare the mass of the softball and the volleyball
77.
During P.E., your soccer ball collides with the goalie. What happens to the soccer ball?
a)
It stops moving completely.
b)
It accelerates at the same rate and in the same direction as the goalie.
c)
It accelerates more and in a different direction than the goalie.
d)
It continues moving at the same velocity as before.
78.

When you jump off a small rowing boat onto the shore, the boat moves backward. Which of Newton's laws explains this action?

a)

Newton's First Law of Motion

b)

Newton's Second Law of Motion

c)

Newton's Third Law of Motion

d)

Newton's Law of Universal Gravitation

79.

If you were to push a shopping cart with twice the force you used before, what would happen to the acceleration of the cart?

a)

The acceleration would decrease.

b)

The acceleration would stay the same.

c)

The acceleration would double.

d)

The acceleration would be halved.

80-81.

Answer the questions below after watching the video

80.

When two objects of differnt mass collide, who accelerates the most?

a)

The lighter mass object will accelerate the most.

b)

The heavier mass object will accelerate the the most.

c)

The both accelerate the same.

d)

Neither accelerate.

81.

Newton's third law states that ...

a)

One object will always accelerate more than the other when they colloide.

b)

when two objects collide there is an equal and opposite reaction.

c)

when two objects collide nothing will happen.

d)

Who cares about Newton?

82.

What does the gravitational force between two objects depend on?

a)

The mass of the first object only

b)

The mass of both objects and the distance between them

c)

The distance between the objects only

d)

The speed at which the objects are moving towards each other

83.
A picture is hanging on a wall and does not move.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
84.
Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
85.
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
86.
Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
87.
An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
88.
This law is often called "the law of inertia."
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
89.
A student leaves a pencil on a desk and the pencil stays in the same spot until another student picks it up.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
90.
A rocket is sent into space.  When the power dies out, the rocket will just keep floating and moving in space forever (unless an unbalanced force, such as a meteor, runs into it).
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
91.

Newton's 3rd Law states that for ever action there is an equal and opposite ________.

a)

reaction

b)

satisfaction

c)

fraction

d)

transaction

92.

If a 10 kilogram object accelerates suddenly at 15 m/s2, how much force was applied to the object?

a)

150 Newtons

b)

15 Newtons

c)

150 kilograms

d)

100 kilograms

93.
45 m/s2 is the... 
a)
Mass
b)
Force 
c)
Acceleration
d)
weight
94.
A 20 kg bike accelerates at 10 m/s2.  what was the force?
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
95.
Unit of mass
a)
m/s 2
b)
m/s
c)
newtons
d)
kg
96.

A force of 250 N is applied to an object that accelerates at a rate of 5 m/s2. What is the mass of the object? To solve this problem you must do -

a)

250 ÷ 5

b)

5 ÷ 250

c)

250 x 5

97.

A 50 kg skater pushed by a friend accelerates 5 m/s2. How much force did the friend apply? To solve this problem you must do -

a)

50 ÷ 5

b)

5 ÷ 50

c)

50 x 5

98.

A 5 kg block is pulled across a table by a net force of 32 N. Calculate the acceleration of the object.

a)

160 m/s2

b)

6.4 m/s2

c)

0.16 m/s2

99.

What is the formula for force?

a)

F=m/a

b)

F=a/m

c)

F=ma

d)

F=Fm

100.

Unit for acceleration?

a)

m/s2

b)

kg

c)

newtons

d)

a

101.

What is the unit for force?

a)

m/s2

b)

kg

c)

N

d)

F

102.

A 50 kg skater pushes off from a wall with a force of 200 N. What is the skater’s acceleration?

Solve this problem

a)

200 / 50 = 4 m/s2

b)

50 / 200 = 4 N

c)

200 x 50 = 10,000 m/s2

d)

200 / 50 = 4 N

103.

A push or a pull.

a)

Force

b)

Friction

c)

Weight

d)

Gravity

104.

The quantity of matter in an object.

a)

matter

b)

inertia

c)

weight

d)

mass

105.

speeding up, slowing down, changing direction are all examples of...

a)

speed

b)

momentum

c)

acceleration

d)

force

106.
A picture is hanging on a wall and does not move.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
107.
What is the tendency of an object to resist a change in motion?
a)
coffee
b)
motion
c)
inertia
d)
gravity
108.

What is Newton's 3rd Law?

a)

For every action there is an equal and opposite reaction.

b)

Acceleration depends on two variables, the mass of the object and the amount of force.

109.
A person not wearing a seatbelt flies through a car window when someone slams on the breaks because the person’s body wants to remain in continuous motion even when the car stops.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
110.
A soccer ball accelerates more than a bowling ball when thrown with the same force.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
111.

What law is best described by inertia?

a)

1st

b)

2nd

c)

3rd

112.
a)

1st law

b)

2nd law

c)

3rd law

113.
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
a)
The Law of Inertia
b)
The Law of Acceleration
c)
The Law of Conservation of Momentum
114.

Which of the following is an example of an unbalanced force?

a)

A book resting on the table.

b)

A pencil that is knocked to the ground.

115.

What is Newton's 2nd Law?

a)

For every action there is an equal and opposite reaction.

b)

Acceleration depends on two variables, the mass of the object and the amount of force.

116.

Newton's first law states that an object must travel at a constant speed and in ___________, unless an unbalanced force acts on it.

a)

in a circle

b)

a wave like manner

c)

the same direction

117.

Looking at the image. Decide if this is balanced or unbalanced.

a)

Unbalanced

b)

Balanced

118.

The force that prevents a ball rolling on the ground from continuing on it's path forever is...

a)

Friction

b)

Mass

c)

Inertia

119.

Which of the following is an example of balancing forces?

a)

A Book resting on the table.

b)

A pencil is knocked off the desk.

120.

A rollercoaster heading down a hill is _____________.

a)

at rest

b)

slowing down

c)

accelerating

d)

velocity

121.

if an object stays still or continues moving at the same speed and in the same direction, it is a _______ force.

a)

weak

b)

strong

c)

balanced

d)

unbalanced

122.
What Newtons law does this picture represent
a)
Newtons 2nd law 
b)
Law of gravity 
c)
Newtons 1st law
d)
Newtons 5th law

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