Answers AA-F26 Physical ScienceSpeed and Velocity

Speed and Velocity Answers

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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?

5.7 km/h north and 5.8 km/h west are instantaneous speeds, while 8.1 km/h northwest is the average speed.

5.7 km/h north and 5.8 km/h west are average speeds, while 8.1 km/h northwest is the instantaneous speed.

5.7 km/h north and 5.8 km/h west are average velocities, while 8.1 km/h northwest is the instantaneous velocity.

5.7 km/h north and 5.8 km/h west are instantaneous velocities, while 8.1 km/h northwest is the average velocity.

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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.)

Her speed is 4.4 m/s, and her velocity is 0 m/s.

Her speed is 1.1 m/s, and her velocity is 0 m/s.

Her speed is 0 m/s, and her velocity is 2400 m/s.

Her speed is 4.4 m/s, and her velocity is 4.4 m/s.

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?

the starting point

the direction

the end point

the time per meter

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

a 5 mile course from the center of town heading north to the outskirts of town

a 100 meter swim in a 50 meter pool

a 2 mile run around a 400 meter track

a 10 mile bike course that zigzags through the mountains and back again

The chart shows Daniela’s run through her race.

1.5 m/s

2 m/s

2.5 m/s

5 m/s

Which explains the information needed to calculate speed and velocity?

Both require the total distance, but velocity also requires time and displacement.

Both require time, but velocity requires displacement and speed requires distance.

Speed requires displacement, while velocity requires distance.

Speed does not require time, while velocity does require time.

Which units are used to measure both velocity and speed? Select three options.

m/s

d/t

km/h

mph

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

A negative slope results when an individual is moving away from the origin.

A horizontal line on the graph means the individual is moving at a non-zero velocity.

A positive slope results when an individual is moving away from the origin.

The speed of an individual cannot be determined from this type of graph.

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

Column A should be “Time,” and Column B should be “Position.”

Column A should be “Position,” and Column B should be “Time.”

Column A should be “Velocity,” and Column B should be “Speed.”

Column A should be “Speed,” and Column B should be “Velocity.”

Which is a valid velocity reading for an object?

45 m/s

45 m/s north

0 m/s south

0 m/s

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Speed and Velocity Answers

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