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Forces and Motion Review

Total questions: 52

Worksheet time: 2hrs 36mins

Name
Class
Date
1.

A push or pull on matter from all directions is called . . .

a)

speed

b)

velocity

c)

acceleration

d)

force

2.
What is the unit to MEASURE force?
a)
Kilogram
b)
Meter
c)
Pascal
d)
Newton
3.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
4.
What is the unit to MEASURE force?
a)
Kilogram
b)
Meter
c)
Pascal
d)
Newton
5.
What is the net force?
a)

+5 N 

b)

+25 N 

c)

-5 N 

d)

+55 N 

6.
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.
7.
This is an example of what kind of force?
a)
Balanced Force
b)
Pushing Force
c)
Gravity Force
d)
Unbalanced Force
8.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
9.
Calculate the net force of the object in the image shown.
a)
20N
b)
35N
c)
5N
d)
25N
10.
Which direction will the object move?
a)
Up
b)
Down
c)
Right
d)
Left
11.
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.
12.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
13.

"A net force will cause an object to be in motion." Which of the following corrects this wrong statement?

a)

"Balanced forces will cause an object to be in motion."

b)

"A net force will only cause an object to be in motion if it was already in motion."

c)

"A net force has nothing to do with motion."

d)

"A net force will cause an object to change its motion."

14.

The magnet pulls on the oil drum. According to Newton's Third Law of Motion, ---.

a)

the magnet pulls on the oil drum just as hard as the oil drum pulls on the magnet

b)

the oil drum pulls on the magnet less hard because the oil drum is bigger

c)

the oil drum pulls on the magnet harder because the oil drum is bigger

d)

the oil drum does not pull on the magnet if the oil drum is not already magnetized

15.

If the scale reads "0.035 kg", what weight of popcorn is being bought? (Use 10 m/s² down for g.)

a)

0.0035 N

b)

0.035 N

c)

0.35 N

d)

286 N

16.

If this plate of fries weighs 1.2 N, what mass of fries is being served? (Use g = 10 m/s² down)

a)

120 kg

b)

0.120 kg

c)

8.8 kg

17.

The astronaut is wearing a 57-kg backpack to provide life support. Which statement is true?

a)

Compared to the Moon, the backpack would have less mass on Earth.

b)

Compared to the Moon, the backpack would have less weight on Earth.

c)

Compared to the Moon, the backpack would have more weight on Earth.

d)

Compared to the Moon, the backpack would have more mass on Earth.

18.

If the alligator shown accelerates left at 5 m/s², the alligator has a mass of ---.

a)

50 kg

b)

130 kg

c)

210 kg

d)

1250 kg

19.

The airship shown has a mass of 8,620 kg. The airship will accelerate ---.

a)

0 m/s²

b)

0.53 m/s² right

c)

0.89 m/s² right

d)

0.17 m/s² right

20.

If you divide momentum by velocity, the result is the value of the object’s

a)

mass

b)

direction

c)

energy

d)

speed

21.

Which object does not have momentum?

a)

fish swimming in a pond

b)

a feather falling to the ground

c)

a rock by the side of the road

d)

a boulder rolling down a hill

22.

What is the reaction force when you place a cup on a table?

a)

The force of the cup on the table.

b)

The force of the table on the cup.

c)

The force of gravity on the table.

d)

The force of gravity on the cup.

23.
Speed is the ratio of the distance an object moves to
a)
the amount of time needed to travel the distance.
b)
the direction the object moves.
c)
the displacement of the object.
d)
the motion of the object.
24.
The rate at which velocity changes is called
a)
speed
b)
vectors
c)
acceleration
d)
motion
25.
An object that is accelerating may be
a)
slowing down
b)
gaining speed
c)
changing direction
d)
all of the above
26.
Newton’s third law of motion describes
a)
actions and reaction forces
b)
balanced forces
c)
centripetal forces
d)
net forces
27.
A person drives north 6 blocks, then turns west, and drives 6 blocks. The driver then turns south and drives 6 blocks.How could the driver have made the distance shorter while maintaining the same displacement?
a)
by driving west 6 blocks from the starting point
b)
by driving north 4 blocks and west 7 blocks
c)
by driving south 6 blocks from the starting point
d)
by driving back to the starting point by the same
28.
Which example identifies a change in motion that produces acceleration?
a)
a speed skater moving at a constant speed on a straight track
b)
a ball moving at a constant speed around a circular track
c)
a particle moving in a vacuum at constant velocity
d)
a vehicle moving down the street at a steady speed
29.
According to Newton’s second law of motion, the acceleration of an object equals the net force acting on the object divided by the object’s
a)
mass
b)
momentum
c)
velocity
d)
weight
30.
A girl walks from her home to a friend’s home 3 blocks north. She then walks 2 blocks east to the post office, 1 block north to the library, and 1 block east to the park. From the park, she walks 2 blocks west to the movie theater. After the movie, she walks 4 blocks south to the pet store. What is the girl’s displacement from her starting point to the pet store?  Calculate the distance she walked in blocks.
a)
1 block west, 14 blocks total
b)
1 block east, 13 blocks total
c)
3 blocks north, 10 blocks total
d)
4 blocks south, 4 blocks total
31.
A person walks 1 mile every day for exercise, leaving her front porch at 9:00 am. and returning to her front porch at 9:25 am. What is the total displacement of her daily walk?
a)
1 mile
b)
0
c)
25 minutes
d)
none of the above
32.
A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat’s acceleration while it travels the 12.0 m?
a)
1.3 m/s2
b)
2.5 m/s2
c)
3.0 m/s2
d)
7.5 m/s2
33.

The unit we use to measure acceleration is ___.

a)

m/s

b)

m

c)

s

d)

m/s2

34.

The unit we use to measure speed is ___.

a)

m/s

b)

m

c)

s

d)

m/s2

35.

The unit we use to measure distance is ___.

a)

m/s

b)

m

c)

s

d)

m/s2

36.

The unit we use to measure time is ___.

a)

m/s

b)

m

c)

s

d)

m/s2

37.

*A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s2, what is its velocity after 2 s?

a)

0 m/s

b)

0.5 m/s

c)

1 m/s

d)

1.5 m/s

38.

*How long would it take a car, starting from rest and accelerating uniformly in a straight line at 5 m/s2, to cover a distance of 200 m?

a)

9.0s

b)

10.5s

c)

12.0s

d)

15.5s

39.

*Sam jumped from a plane. His acceleration was -9.8 m/s2. He hit the ground in 30 seconds. What was his velocity just before he hit the ground?

a)

294 m/s

b)

0.32 m/s

c)

-294 m/s

d)

3.1 m/s

40.

*An object with an initial velocity of 3.50 m/s moves east along a straight and level path. The object then undergoes a constant acceleration of 1.80 m/s2 east for a period of 5.00 s. How far does the object move while it is accelerating?

a)

6.30 m

b)

17.5 m

c)

27.2 m

d)

40.0 m

41.

If an object starts from rest, what is its initial velocity?

a)

Depends on the problem

b)

0

c)

-9.8m/s2

d)

Always positive

42.

Which of Newton's laws is shown

a)

1st law

b)

3rd law

c)

2nd law

43.

If there is a big mass, it would need a stronger force to accelerate it. Which law does this describe?

a)

3rd law

b)

1st law

c)

2nd law

44.

What force slows objects down and keeps them from moving?

a)

Acceleration

b)

Gravity

c)

Friction

d)

Net Force

45.
A ping-pong ball rolls forward 6 meters, and bounces backward 3 meters. It traveled a total distance of:
a)
9 meters
b)
6 meters
c)
3 meters
d)
0 meters
46.
Liza is swimming laps from one end of a 50 meter pool to the other. Going from one end to the other is considered one lap. If she swims four complete laps, which statement is TRUE?
a)
Her distance and displacement are both zero.
b)
Her distance is zero, but her displacement is 200 meters.
c)
Her distance is 200 meters, but her displacement is zero.
d)
Her distance and displacement are both 200 meters.
47.
Ronaldo runs across a soccer field, moving 10 meters north, then 8 meters west. His displacement would be:
a)
10.2 m, NW
b)
12.8 m, NW
c)
15.4 m, NW
d)
18.0 m, NW
48.

Jerry walked from home to school, then from the school to the park. What is his total displacement?

a)

2 km

b)

5 km

c)

8 km

d)

10 km

49.

Colin skateboards down the sidewalk in front of the school, traveling at 24 km/h. How much time would it take him to travel 6.0 km?

a)

0.25 h

b)

0.4 h

c)

5.4 h

d)

12 h

50.

A little freshman moves down the hall at 3.2 m/s. When he sees Luke coming, he slows down. After 3.2 s, he is moving at 1.2 m/s. What is his acceleration?

a)

-0.25 m/s2

b)

-42.9 m/s2

c)

-0.625 m/s2

d)

-12 m/s2

51.

Kendra is coming home late, past her curfew. As she sneaks quietly into her house trying not to wake up her parents, she slinks up the stairs moving 10.7 m in 26.8 s. Find her speed.

a)

0.4 m/s

b)

2.0 m/s

c)

7.1 m/s

d)

10.2 m/s

52.

While on a weekend trip to New York City, you spot Angelina Jolie and just HAVE to meet her. You run after her at 2.7 m/s. How far will you have moved in 15.9 s?

a)

22 m

b)

42.9 m

c)

4.95 m

d)

2.0 m