AnswersSY2025-26 - 2002040 MJ Comprehensive Science 1 Sem 1 CRUnit Test

Lab: Motion Answers

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1
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Which graph shows a negative acceleration?

A
A graph with horizontal axis time (seconds) and vertical axis position (meters). A straight line runs from 0 seconds 0 meters upward.
Option A
B
A graph with horizontal axis time (seconds) and vertical axis position (meters). A concave line runs from 0 seconds 0 meters upward.
Option B
C
A graph with horizontal axis time (seconds) and vertical axis position (meters). A straight line runs from 0 seconds some positive number meters upward downward to some positive number of seconds 0 meters.
Option C
D
Option
Option D
2
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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
3

The chart shows the times and accelerations for three drivers.Which lists them from greatest to lowest change in velocity?

Question illustration
A
Dustin → Diego → Kira
B
Dustin → Kira → Diego
C
Kira → Dustin → Diego
D
Kira → Diego → Dustin
4

A car is traveling in a race. The car went from the initial velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds. What is the acceleration?

A
–13 m/s2
B
–6 m/s2
C
6 m/s2
D
13 m/s2
5

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
6

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.
7

Which equation can be used to solve for acceleration?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
8

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.
9

The graph represents velocity over time.

Question illustration
A
–0.4 m/s2
B
–0.2 m/s2
C
0.2 m/s2
D
0.4 m/s2
10

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

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