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

Acceleration Answers

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Which explains the information needed to calculate speed and velocity?

A
Both require the total distance, but velocity also requires time and displacement.
B
Both require time, but velocity requires displacement and speed requires distance.
C
Speed requires displacement, while velocity requires distance.
D
Speed does not require time, while velocity does require time.
2
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Jamal is 8 miles away from his house. He rides his bike home toward home at a speed of 12 mph..How far away from home is he after a half hour?

A
1 mile
B
2 miles
C
3 miles
D
4 miles
3

Mr. Smith is designing a race where velocity will be measured. Which course would allow velocity to accurately get a winner?

A
a 5 mile course from the center of town heading north to the outskirts of town
B
a 100 meter swim in a 50 meter pool
C
a 2 mile run around a 400 meter track
D
a 10 mile bike course that zigzags through the mountains and back again
4

Kiley went 5.7 km/h north and then went 5.8 km/h west. From start to finish, she went 8.1 km/h northwest.Which best describes her numbers?

A
5.7 km/h north and 5.8 km/h west are instantaneous speeds, while 8.1 km/h northwest is the average speed.
B
5.7 km/h north and 5.8 km/h west are average speeds, while 8.1 km/h northwest is the instantaneous speed.
C
5.7 km/h north and 5.8 km/h west are average velocities, while 8.1 km/h northwest is the instantaneous velocity.
D
5.7 km/h north and 5.8 km/h west are instantaneous velocities, while 8.1 km/h northwest is the average velocity.
5

Greg is in a bike race. At mile marker four (out of ten), his speed was measured at 13.5 mph.Which best describes the measured number?

A
It is the average speed of the bike rider.
B
It is the instantaneous speed of the bike rider.
C
It is the instantaneous velocity of the bike rider.
D
It is the average velocity of the bike rider.
6

Which units are used to measure both velocity and speed? Select three options.m/sd/tkm/hmphm2

A
m/s
B
d/t
C
km/h
D
mph
E
m2
7

Veronica’s velocity was measured as 4.3 m/s. She displaced 20 meters in 4.7 seconds. Which piece of information is missing for the correct calculation of velocity?

A
the starting point
B
the direction
C
the end point
D
the time per meter
8

Which statement can be supported by using a position-time graph?

A
A negative slope results when an individual is moving away from the origin.
B
A horizontal line on the graph means the individual is moving at a non-zero velocity.
C
A positive slope results when an individual is moving away from the origin.
D
The speed of an individual cannot be determined from this type of graph.
9

Lila is a track and field athlete. She must complete four laps around a circular track. The track itself is a 400 meter track and it took her 6 minutes total to complete.Which best describes her speed and velocity? (There are 60 seconds in 1 minute.)

A
Her speed is 4.4 m/s, and her velocity is 0 m/s.
B
Her speed is 1.1 m/s, and her velocity is 0 m/s.
C
Her speed is 0 m/s, and her velocity is 2400 m/s.
D
Her speed is 4.4 m/s, and her velocity is 4.4 m/s.
10

The chart shows Daniela’s run through her race.

Question illustration
A
1.5 m/s
B
2 m/s
C
2.5 m/s
D
5 m/s

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