AnswersTX-Integrated Physics and ChemistrySpeed and Velocity

Speed and Velocity Answers

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1
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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
2
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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.
3

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
4

The graph is the path Beth took on a walk.

Question illustration
A
Beth slowed down considerably.
B
Beth turned around and went the other direction.
C
Beth sped up considerably.
D
Beth went farther away from the origin.
5

The graph indicates the running route for Tobias.Which best describes his run?

Question illustration
A
From time 0 to 6, he went fast and then slowed down.
B
From time 6 to 10, he was at his slowest.
C
From time 12 to 14, he went very slow.
D
From time 14 to 18, he went toward the starting point.
6

Which best defines the relationship between speed and velocity?

A
Speed is velocity with displacement.
B
Velocity is speed with displacement.
C
Speed is based on a specific direction.
D
Velocity is based on distance.
7

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.
8

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.
9

Which is a valid velocity reading for an object?

A
45 m/s
B
45 m/s north
C
0 m/s south
D
0 m/s
10

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.

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