Unit 6: Speed and Velocity

The chart shows Daniela's run through her race. What is her velocity?

2.5 m/s

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 velocities, while 8.1 km/h northwest is the average velocity.

The graph indicates the running route for Tobias. Which best describes his run? From time 6 to 10, he was at his _________

From time 6 to 10, he was at his slowest.

Lila is a track and field athlete. She has to complete four laps around the track, which is 400 meters. The race took her 6 minutes to complete. Which best describes her speed and velocity?

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

Speed is calculated by taking _________ divided by time.

distance

Which is a valid velocity reading for an object?

45 m/s north

The graph is the path Beth took on a walk. What does the line from time 6 to 10 indicate?

Beth went back toward her origin.

Which explains the information needed to calculate speed and velocity?

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

The chart shows the movement of a ball after several seconds. Column A is on the x-axis, and Column B is on the y-axis. Which titles should replace A and B?

Column A should be "Time," and Column B should be "Position."

The graph shows two runners participating in a race. Which best describes the runners?

Daniela had a 5 meter head start, and Leonard caught up to her at 25 meters.

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?

It is the instantaneous speed of the bike rider.

Which best defines the relationship between speed and velocity?

Velocity is speed with displacement.

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

Which units are used to measure both velocity and speed? Check all that apply.

m/s km/h mph