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Force, Mass and Acceleration Review (HP)

Total questions: 59

Worksheet time: 1hrs 8mins

Name
Class
Date
1.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)

Newton's 1st Law

Inertia

b)

Newton's 2nd Law

F = mxa

c)

Newton's 3rd Law

Force pairs

d)

None of them

2.
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
3.
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
4.
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
5.
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
6.
The force that opposes motion between two surfaces in contact with each other.
a)
inertia
b)
friction
c)
momentum
d)
gravity
7.
A force that opposes motion between a surface in contact with the atmosphere.
a)
air resistance
b)
gravity
c)
momentum
d)
terminal velocity
8.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
9.

When two equal forces act in opposite directions on an object, they are called ______________________.

a)

frictional force

b)

balanced force

c)

centripetal force

d)

gravitational force

10.

When an unbalanced force acts on an object, the force ______________________.

a)

changes the motion of the object

b)

is cancelled by another force

c)

does not change the motion of an object

d)

is equal to the weight of the object

11.

A cannonball with a mass of 0.5 kg is flying at an acceleration of 10 m/sec/sec. What is its force?

a)

50 Newtons

b)

5 Newtons

c)

20 Newtons

d)

9.5 Newtons

12.
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
13.

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

14.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
15.
What is the definition of "weight"?
a)
the force in which gravity pulls on an object
b)
the time it takes to get on a ride 
c)
the amount of matter in an object
d)
the size of an object
16.
Which of these best describes why your weight (on Earth) would change on another planet?
a)
weight doesn’t change, no matter where you are
b)
different planets have different gravitational pulls
c)
In general, the smaller the planet, the greater weight
d)
dehydration effects on different planets change weight
17.

The normal force is the ____ force exerted by a surface on another object.

                       

                              

a)

a.    perpendicular field  

b)

b.    parallel contact  

c)

c.   perpendicular contact

d)

d.   parallel field

18.

When the drag force on an object equals the gravitational force, the object attains ____ .

                

            

a)

a.    acceleration      

b)

b.   apparent weight  

c)

c.   terminal velocity

d)

d.   maximum mass

19.

You can add the forces acting upon an object by using ____ addition to find the net force.

a)

vector

b)

dot

c)

finger

d)

long

20.
 267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?
a)
26.75 kg
b)
63.69 kg 
c)
263.3 kg 
d)
1123.5 kg
21.
Name the missing force....
a)
weight force
b)
normal force
c)
frictional force
d)
tension force
22.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
23.
What is the net force in this diagram?
a)
8N right
b)
2 N right
c)
8N left
d)
2N left
24.
If there are two forces going in the SAME direction, you would ...?
a)
(-) Subtract the forces
b)
(+) Add the forces
c)
Neither
d)
(x) Multiply
25.

If there are two forces going in opposite directions how would you find the net force?

a)

Subtract

b)

Add

c)

Neither

d)

Multiply

26.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
27.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
28.
Calculate the net force shown in the  diagram?
a)
0N
b)
400 N
c)
600 N
d)
800 N
29.

An object contains 8 N to the left , and 4 N to the right. Find the net force of the object. Is this balanced?

a)

12 N Right No

b)

4 N Left No

c)

12 N Right Yes

d)

4 N Left Yes

30.

The net force acting on the object is (a)   N. Type the correct answer. Include units and direction.

31.

What is the net force acting on the object?

(a)  

32.
__________ is the sum of all forces acting on an object. It is capable of accelerating a mass. 
a)
velocity
b)
gravity
c)
net force
d)
distance
33.

What is the net force acting on the box?

a)

60N, Left

b)

40N, Right

c)

0N

d)

60N, Right

34.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
35.
How can Newton's second law be represented  mathematically? 
a)
F=MA
b)
M= F/A
c)
A= F/M
d)
All are correct
36.
If you increase the mass on an object, its acceleration
a)
decreases
b)
stays the same
c)
also increases
d)
stops
37.

True or False. Acceleration of an object is directly proportional to the net force acting on it

a)

True

b)

False

38.

Your 2500 kg car experiences a net force of 5000 N. How fast will it accelerate?

a)

20 m/s2

b)

0.5 m/s2

c)

2 m/s2

d)

120 N

39.

The hockey puck is moving at a constant velocity across the ice. What forces does the puck experience at this moment?

a)

None

b)

Gravity

c)

Gravity and Normal

d)

Gravity, Normal, and Friction

e)

Gravity, Normal, Friction, and Applied

40.
Name the missing force...
a)
applied force
b)
weight force
c)
lift
d)
normal force
41.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
42.

The coffee cup in the picture is at rest on the table. What is true about the Normal force?

a)

The normal force is exactly 15

b)

The normal force is less than 15

c)

The normal force is more than 15

d)

The normal force is -10

43.

A man pushes a box across the floor at a constant velocity. There is a force on the box resisting its motion. This is the ...

a)

force of gravity

b)

normal force

c)

force of friction

d)

applied force

44.

Which free body diagrams show balanced forces? (You can select more than 1)

a)

A

b)

B

c)

C

d)

D

e)

E

45.

Which of the freebody diagrams show unbalanced forces?

a)

A

b)

B

c)

C

d)

D

46.

Use the free-body diagram shown to determine the acceleration of this 91.8-kg object.

a)

150 m/s/s down

b)

1.63 m/s/s down

c)

5.2 m/s/s down

d)

110 ms/s/s up

47.

An object is experiencing a constant acceleration of

2.11 m/s/s. It is being pushed along a horizontal surface by a 600-Newton force and experiences an opposing force of 475 Newtons. What is the mass of the object?

a)

125 kg

b)

59.2 kg

c)

24.2 kg

d)

10.4 kg

48.

While skydiving, Dee Selerate opens her parachute and her 53.4-kg body immediately accelerates upward for an instant at 8.66 m/s/s. Determine the upward force experienced by Dee during this instant.

a)

986.3 N

b)

321.4 N

c)

53.6 N

d)

1045.2 N

49.

A rightward force is applied to a 6-kg object to move it across a rough surface at constant velocity. The object encounters 15 N of frictional force. What is the applied force on the object?

a)

0 N

b)

25 N

c)

75 N

d)

15 N

50.

(Use Fnet=ma). Use the diagram to determine the net force, assume the object is accelerating at a rate of 2 m/s2 and determine the mass of the object.

a)

2 kg

b)

4 kg

c)

6 kg

d)

8 kg

51.

(Use Fnet=ma). Use the diagram to determine the net force, assume the object is accelerating at a rate of 3 m/s2, and determine the object's mass?

a)

3 kg

b)

5 kg

c)

60 kg

d)

75 kg

52.

(Use Fnet=ma). What is the mass of a falling rock if it produces a force of 147 N? (Acceleration due to gravity = 9.8 m/s2)

a)

15 kg

b)

1,440.6 kg

c)

156.8 kg

d)

137.2 kg

53.

(Use Fnet=ma). Use the diagram to determine the net force, assume the object is accelerating at a rate of 2 m/s2 and determine the mass of the object.

a)

2 kg

b)

4 kg

c)

6 kg

d)

8 kg

54.

What is the slope of the line?

a)

mass =(F/A)

b)

acceleration=(F/m)

c)

force = (ma)

d)

a relationship between acceleration and force

55.

What is the formula for solving for mass in Newtons second law?

a)

mass =(F/A)

b)

acceleration=(F/m)

c)

force = (ma)

d)

a relationship between acceleration and force

56.

Using the slope of the line in the graph provided, determine how much FORCE was required to accelerate this object by a rate of 2m/s2.

a)

0.5 N

b)

2N

c)

2.5 N

57.

Using Newtons 2nd Law of F=MA, and using the slope of the line in the graph provided, How much mass does this object have when it is accelerated at a rate of 4m/s2? (Hint: find the amount of force from the slope first. )

a)

0.5 N

b)

0.25 N

c)

235 N

58.

What is the formula for solving for mass in Newtons second law, F=ma?

a)

mass =(F/A)

b)

acceleration=(F/m)

c)

force = (ma)

d)

a relationship between acceleration and force

59.

Determine the mass of a cart from the slope of the graph

a)

Slope = m = F/a

= 4kg

b)

slope = m = Fxa

= 40 kg

c)

slope = m = a/f

= 0.25 kg

d)

a relationship between acceleration and force

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