AnswersPhysical ScienceSpeed and Velocity

Speed and Velocity — Quiz Answers

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1
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Which best defines the relationship between speed and velocity?

A
Velocity is based on distance.
B
Speed is velocity with displacement.
C
Velocity is speed with displacement.
D
Speed is based on a specific direction.
2
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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 0 m/s , and her velocity is 2400 m/s .
B
Her speed is 1 point 1 m/s , and her velocity is 0 m/s .
C
Her speed is 4 point 4 m/s , and her velocity is 0 m/s .
D
Her speed is 4 point 4 m/s , and her velocity is 4 point 4 m/s .
3

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
4

Which units are used to measure both velocity and speed? Choose three correct answers.

A
m/s
B
mph
C
d/t
D
km/h
E
m squared
5

Veronica’s velocity was measured as 4 point 3 m/s She displaced 20 meters in 4 point 7 seconds. Which piece of information is missing for the correct calculation of velocity?

A
the starting point
B
the time per meter
C
the end point
D
the direction
6

Greg is in a bike race. At mile marker four (out of ten), his speed was measured at 13 point 5 mph Which best describes the measured number?

A
It is the instantaneous velocity of the bike rider.
B
It is the average velocity of the bike rider.
C
It is the instantaneous speed of the bike rider.
D
It is the average speed of the bike rider.
7

Which is a valid velocity reading for an object?

A
45 m/s
B
0 m/s
C
45 m/s north
D
0 m/s south
8

Which explains the information needed to calculate speed and velocity?

A
Both require time, but velocity requires displacement and speed requires distance.
B
Speed requires displacement, while velocity requires distance.
C
Speed does not require time, while velocity does require time.
D
Both require the total distance, but velocity also requires time and displacement.
9

Kiley went 5 point 7 km/h north and then went 5 point 8 km/h west. From start to finish, she went 8 point 1 km/h northwest. Which best describes her numbers?

A
5 point 7 km/h north and 5 point 8 km/h west are average speeds, while 8 point 1 km/h northwest is the instantaneous speed.
B
5 point 7 km/h north and 5 point 8 km/h west are instantaneous velocities, while 8 point 1 km/h northwest is the average velocity.
C
5 point 7 km/h north and 5 point 8 km/h west are instantaneous speeds, while 8 point 1 km/h northwest is the average speed.
D
5 point 7 km/h north and 5 point 8 km/h west are average velocities, while 8 point 1 km/h northwest is the instantaneous velocity.
10

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

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

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