AnswersMO-Physical Science A-CRIntroduction to Motion

Acceleration Answers

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1
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The chart shows the time, initial velocity, and final velocity of three riders.Which best describes the riders' final velocities ?

Question illustration
A
Gabriella is speeding up at the same rate that Kendall is slowing down, and Franklin is not accelerating.
B
Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating.
C
Gabriella and Franklin are both slowing down, and Kendall is accelerating.
D
Gabriella is slowing down, and Kendall and Franklin are accelerating.
2
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If the change in velocity increases, what happens to the acceleration during the same time period?

A
Acceleration decreases.
B
Acceleration increases.
C
Acceleration becomes negative.
D
Acceleration becomes steady.
3

If velocity is positive, which would most likely yield a negative acceleration?

A
A final velocity that is faster than an initial velocity.
B
A time that is less than a half hour.
C
An initial velocity that is faster than a final velocity.
D
A time that is greater than a half hour.
4

Which of these is an example of acceleration?

A
a bicyclist turning around a corner
B
a car parked in a driveway
C
a bus traveling north at 25m/s
D
a helicopter waiting to take off
5

Ariana is accelerating her car at a rate of 4.6 m/s2 for 10 seconds. Her starting velocity was 0 m/s.What was her final velocity?

A
0 m/s
B
2.3 m/s
C
4.6 m/s
D
46 m/s
6

Beverly and Carl are in a race. Their graphs show the data.

Question illustration
A
Even though for a majority of the race they accelerated at the same rate, Carl won because his initial acceleration was greater than Beverly’s.
B
Even though for a majority of the race they accelerated at the same rate, Beverly won because her initial acceleration was greater than Carl’s.
C
Beverly accelerated at a greater rate for the entire race.
D
Carl accelerated at a greater rate for the entire race.
7

The graph depicts the velocity and times of Elan and Anna during a race.

Question illustration
A
From 0 to 2 seconds, Anna experienced negative acceleration.
B
From 3 to 6 seconds, Elan accelerated while Anna did not.
C
From 6 to 8 seconds, Elan accelerated faster than Anna.
D
From 8 to 10 seconds, Elan experienced negative acceleration.
8

Which refers to the rate of change in velocity?

A
speed
B
acceleration
C
direction
D
magnitude
9

Isla’s change in velocity is 30 m/s over 5 seconds. Hazel has the same change in velocity, but it takes her 10 seconds to achieve it.Which best explains why they would have different accelerations?

A
Isla had negative acceleration, and Hazel had positive.
B
Isla's change in velocity occurred over a shorter time than Hazel's.
C
Isla had positive acceleration, and Hazel had negative.
D
Isla went a farther distance than Hazel.
10

Which equation is most likely used to determine the acceleration from a velocity vs. time graph?

A
a =
Option A
B
m =
Option B
C
a =
Option C
D
m =
Option D

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Acceleration Answers — MO-Physical Science A-CR