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Force Unit Review

Total questions: 80

Worksheet time: 43mins

Name
Class
Date
1.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
d)
Molecules
2.

The ability to do work is called ___________________.

a)

force

b)

gravity

c)

energy

d)

friction

3.

A measure of how fast something moves or the distance it moves, in a given amount of time.

a)

Motion

b)

Position

c)

Acceleration

d)

Speed

4.
It took a snail 5 seconds to travel 10 inches. How fast was the snail moving?
a)
2 mph
b)
2 in/s
c)
50 in/s
d)
15 in/s
5.
If a person walks 40 meters in 10 seconds how fast are they walking?
a)
400 m/s
b)
4 mph
c)
4 m/s
d)
50 m/s
6.
A car travels 50 miles in 2 hours. At what speed was the car traveling?
a)
25 mph
b)
100 mph
c)
52 mph
d)
48 mph
7.

What is the formula for speed?

a)

speed = distance x time

b)

speed=distance / time

c)

speed = time / distance

d)

speed = distance + time

8.

What does the solid line on this graph represent?

a)

Constant speed

b)

Acceleration

c)

At rest

d)

deceleration

9.

What is the line on this graph showing?

a)

moving away from starting point at a constant speed

b)

moving back towards the starting point at a constant speed

c)

acceleration (getting faster)

d)

deceleration (getting slower)

10.

What is this line of this graph showing?

a)

moving away from starting point at a constant speed

b)

moving back towards the starting point at a constant speed

c)

acceleration (getting faster)

d)

deceleration (getting slower)

11.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
12.
Which line represents an object moving at a faster speed?
a)
A
b)
B
13.
Which graph shows the object standing still?
a)
A
b)
B
c)
C
d)
D
14.
As mass increases, KE ...
a)
increases
b)
decreases
c)
stays the same
15.

Which has a greater impact on KE?

a)

mass

b)

speed

16.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
17.
The SI unit in which kinetic energy is measured is 
a)
Newton
b)
Kilogram
c)
Joules
d)
Metres per second
18.

always on the y axis

a)

responding variable

b)

manipulated variable

c)

independent variable

d)

affected variable

19.

always on the x axis

a)

dependent variable

b)

responding variable

c)

independent variable

d)

affected variable

20.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
21.
Which is the best example of kinetic energy?
a)
a car parked on a steep hill 
b)
a tennis ball rolling across the court
c)
a picture hanging on the wall 
d)
a piece of coal before it's burned 
22.

Mass and speed both affect the amount of kinetic energy an object has, but ____________ has a greater effect.

a)

mass

b)

speed

c)

volume

d)

weight

23.

At which point does the ball has the greatest gravitational potential energy (GPE)?

a)

A

b)

G

c)

D

d)

C

e)

G

24.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
25.
When riding a roller coaster, you go up and down many hills. When do you have the maximum (most) kinetic energy?
a)
At the top of each hill.
b)
As you go down each hill.
c)
At the bottom of each hill.
d)
As you go up each hill.
26.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
27.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
28.

Which would have the LEAST gravitational potential energy (GPE)?

a)

A ball sitting on the ground

b)

An apple in a tree

c)

An airplane flying 30,000 feet above the ground

d)

A rock sitting on top of Mt. Everest

29.

How could you increase the gravitational potential energy of an object without changing its mass and gravity?

a)

Make the object larger

b)

Lower the object towards the ground

c)

Raise the object farther off the ground

d)

Allow the object to roll on the ground

30.
What is a force?
a)
the PUSH or PULL on an object 
b)
The MOTION an object creates
c)
The objects HITTING one another
d)
Going REALLY FAST
31.
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
32.

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

a)

Subtract

b)

Add

c)

Neither

d)

Multiply

33.
What is the net force?
a)
5.5 N left
b)
5.5 N right
c)
2.5 N left
d)
2.5 N right
34.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
35.
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.
36.
What is the net force?
a)
11 N left
b)
11 N right
c)
3 N left
d)
3 N right
37.
Which one is balanced?
a)
top
b)
bottom
c)
both
38.

Is the Net Force balanced or Unbalanced?

a)

Balanced

b)

Unbalanced

39.
When one energy form is changed into another it is called a
a)
transformation
b)
transfer
c)
translocation
d)
transcription
40.

Increasing an object's mass will increase its kinetic energy.

a)

true

b)

false

41.

Which scenario will have the farthest stopping distance?

a)

An alert driver, on a dry road

b)

An alert driver, on a slippery road

c)

A distracted driver, on a dry road

d)

A distracted driver, on a slippery road

42.

Which scenario will have the shortest stopping distance?

a)

An alert driver, on a dry road

b)

An alert driver, on a slippery road

c)

A distracted driver, on a dry road

d)

A distracted driver, on a slippery road

43.

As speed increases, what happens to stopping distance?

a)

stopping distance increases

b)

stopping distance decreases

c)

it will remain the same

d)

speed does not affect stopping distance

44.

As mass of a vehicle increase, what happens to stopping distance?

a)

stopping distance increases

b)

stopping distance decreases

c)

it will remain the same

d)

mass does not affect stopping distance

45.
What happens when two forces act in the same direction?
a)
They cancel each other out.
b)
The stronger one prevails.
c)
Their strengths are added.
d)
Their sum divided by the two is the total force.
46.
What is a force that works AGAINST MOTION?
a)
Force
b)
Motion
c)
Gravity
d)
Friction
47.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
48.
If these teams 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.
49.

Newton's second law states that greater the mass the more _________ will be needed to move the object.

a)

power

b)

force

c)

distance

d)

speed

50.

Which Law?

When we walk, we push back with our foot, but we move forward.

a)

1st law

b)

2nd law

c)

3rd law

51.

Which Law?

The skateboarder pushes back with one foot, but the skateboard moves forward.

a)

1st law

b)

2nd law

c)

3rd law

52.

Which Law?

When you push down on the diving board, the diving board pushes you back up again.

a)

1st law

b)

2nd law

c)

3rd law

53.

Which Law?

It is easier to pull the small rock than it is to pull the larger rock.

a)

1st law

b)

2nd law

c)

3rd law

54.

Which Law?

The water goes forward out of the hose and the fireman takes a step backwards.

a)

1st law

b)

2nd law

c)

3rd law

55.

Which Law?

An empty wagon is easier to pull than a full wagon.

a)

1st law

b)

2nd law

c)

3rd law

56.

Which Law?

The books are applying a force to the table and the table is applying the same amount of force back on the books.

a)

1st law

b)

2nd law

c)

3rd law

57.

Which Law?

The magician pulled the tablecloth out from under the dishes and the dishes were left undisturbed.

a)

1st law

b)

2nd law

c)

3rd law

58.

Which Law?

A little girl who has been pulling a sled behind her in the snow is crying because when she stopped to tie her hat on, the sled kept moving and hit her in the back of her legs.

a)

1st law

b)

2nd law

c)

3rd law

59.

Which Law?

When Bobby, age 5, and his dad are skipping pebbles on the pond, the pebbles that Bobby's dad throws go farther and faster than his.

a)

1st law

b)

2nd law

c)

3rd law

60.

Which Law?

When you are standing up in a subway train, and the train suddenly stops, your body continues to go foward.

a)

1st Law

b)

2nd Law

c)

3rd Law

61.
What is the net force and the direction of movement?
a)
50 Newtons, Left
b)
50 Newtons, Right
c)
500 Newtons, RIght
d)
450 Newtons, LEft
62.
What is the speed this motion?
a)
constant speed
b)
not moving
c)
speed increasing
d)
speed increasing at a constant rate
63.
What happened during C to D point?
a)
not moving
b)
increasing speed at a constant rate
c)
moving at a constant speed
d)
moving at 0 m/s2 acceleration
64.
This graph demonstrates an object that is -
a)
Increasing speed
b)
At a constant speed
c)
Decreasing speed
d)
Stationary
65.

Which Law?

The soccer ball is going to stay still until a force acts on it.

a)

1st law

b)

2nd law

c)

3rd law

66.

What is the Kinetic Energy at point C?

a)

500,000 J

b)

400,000 J

c)

300,000 J

d)

50,000 J

67.

What is the Kinetic Energy at point D?

a)

500,000 J

b)

250,000 J

c)

300,000 J

d)

50,000 J

68.

What is the GPE at the top?

a)

50 J

b)

25 J

c)

0 J

d)

100 J

69.

What is the KE half way down?

a)

50 J

b)

25 J

c)

0 J

d)

100 J

70.

What is the Total Energy at the bottom?

a)

50 J

b)

25 J

c)

0 J

d)

100 J

71.

What is the KE half way down?

a)

50 J

b)

25 J

c)

0 J

d)

100 J

72.

What is the Total Energy of the system?

a)

14 J

b)

12 J

c)

6 J

d)

8 J

73.

Car 1 and Car 2 have the same mass. Which of the following statements is true?

a)

Car 1 has more kinetic energy because it is moving at a faster rate of speed.

b)

Car 2 has less kinetic energy because it is actually smaller than car one.

c)

Car 2 has more kinetic energy because it is moving at a slower rate of speed.

d)

Car 1 has less kinetic energy because it is moving at a faster rate of speed.

74.

Which of the following statements is correct?

a)

The car has less kinetic energy because it has more mass than the girl.

b)

The car has less kinetic energy because it has more mass than the girl.

c)

The car and the girl have the same amount of kinetic energy because they are moving at the same speed.

d)

The girl has less kinetic energy because she has less mass than the car.

75.

The diagram to the right represents a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest potential energy?

a)

1

b)

2

c)

3

d)

4

76.
At 60 seconds, how far had this object traveled? 
a)
0 m
b)
10 m
c)
20 m
d)
40 m
77.
Which line represents an object moving at a faster speed?
a)
A
b)
B
78.
Which line represents an object moving at a slower speed?
a)
A
b)
B
79.

Which graph shows the relationship between mass and KE?

a)

A

b)

B

80.

Which graph shows the relationship between speed and KE?

a)

A

b)

B

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