AnswersIL-Physical Science A-CRAcids and Bases in Solution

Speed and Velocity Answers

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1
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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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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.
3

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.
4

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
5

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
6

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
7

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.
8

The chart indicates the time, speed, and velocity of five runners.

Question illustration
A
Garreth and Elisa ran the same distance but not the same displacement, Luigi and Jasmine went the same displacement, and Logan ran faster than Jasmine.
B
Garreth ran farther than Luigi, Elisa and Jasmine went the same distance, and Logan and Jasmine has the same displacement in the opposite direction.
C
Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displacement in the opposite direction.
D
Garreth ran less than Logan, Elisa and Jasmine went the same displacement, and Luigi and Garreth ran together.
9

The chart shows the movement of a ball after several seconds.

Question illustration
A
Column A should be “Time,” and Column B should be “Position.”
B
Column A should be “Position,” and Column B should be “Time.”
C
Column A should be “Velocity,” and Column B should be “Speed.”
D
Column A should be “Speed,” and Column B should be “Velocity.”
10

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.

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