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Places Review and Quiz — Unit test Answers

15 verified answers
1
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What is the momentum of a 15 kg tire rolling down a hill at 3 m/s?

A
5 kg • m/s
B
18 kg • m/s
C
45 kg • m/s
D
60 kg • m/s
2
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kg • m/s

A
2,400
B
1,600
C
–800
D
–1,600
3

While the change in will remain the same during a collision, the force needed to bring an object to a stop can be if the time of the collision is .

A
increased
B
decreased
4

Xander reached a final velocity of 4.5 m/s in 3.5 seconds. Finley reached a final velocity of 3.6 m/s in 4.2 seconds. Max reached a final velocity of 7.3 m/s in 1.2 seconds. They all started at the same location from rest.

A
Max Finley Xander
B
Max Xander Finley
C
Xander Finley Max
D
Finley Xander Max
5

Tyler and his family drove from Atlanta to Baltimore. They traveled a total of 678 miles over 2 days.What is the reference point in this scenario?

A
Atlanta
B
Baltimore
C
678 miles
D
2 days
6

Which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?

A
a 50kg couch
B
a 5kg dining chair
C
a 75kg dining table
D
an 10kg end table
7

Which best describes a force?

A
a vector with magnitude and direction
B
a vector with speed and strength
C
a vector with direction only
D
a vector with strength only
8

A tugboat is pulling a barge into a harbor. The barge is exerting a force of 3000 N against the tugboat.Which force would most likely allow the tugboat to move the barge into the harbor?

A
4500 N in the opposite direction of the barge
B
3000 N in the opposite direction of the barge
C
3000 N in the same direction of the barge
D
4500 N in the same direction of the barge
9

Based on the tug of war pictured below, what is the net force?

Question illustration
A
–190 N
B
10 N
C
–10 N
D
190 N
10

Which refers to an object’s resistance to any change in its motion?

A
force
B
acceleration
C
gravity
D
inertia
11

A football player has a mass of 65 kg and is moving with a velocity of 5 m/s. What is the player’s momentum?

A
13 kg • m/s
B
70 kg • m/s
C
305 kg • m/s
D
325 kg • m/s
12

best

H
His speed was 1 m/s, and his velocity was 0.
H
His speed was 2 m/s, and his velocity was 0.
H
His speed was 1 m/s, and his velocity was 1 m/s north.
H
His speed was 2 m/s, and his velocity was 2 m/s south.
13

What is determined by calculating the slope of the position vs time graph?

p
position
v
velocity
d
distance
d
displacement
14

What must be included when describing the displacement of an object?

A
measurement and direction
B
direction and speed
C
total distance and position
D
speed and total distance
15

The graph represents velocity vs. time for Carla.

Question illustration
A
Carla sped up in the beginning of her trip, stopped, and then slowed down.
B
Carla had a greater acceleration in the beginning than in the end.
C
Carla slowed down in the beginning of her trip, stopped, and then sped up.
D
Carla had a continuous acceleration throughout the entire trip.

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