Science 20 Unit B Lesson 1.1-1.5 Review

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

• 10 m/s

• 1000 m/s

• 100 seconds

• 10 seconds

Velocity is speed with __________________________.

• size

• direction

• magnitude

A ping-pong ball rolls forward 6 meters, and bounces backward 3 meters. What was its displacement (distance from the origin)?

• 9 meters
• 6 meters
• 3 meters
• 0 meters

A runner runs 2 laps around a track with a circumference of 400 m. What is their total displacement?

• 800 m

• 0

• 400 m

• 400 m North

Joe rides his bike from point A to point B and then on to point C. What is the total distance traveled?

• 12 m

• 43 m

• 7 m

• 12 m

Joe rides from point A to B to C. What is the displacement?

• 7 m

• 12 m

• 5 m

• 2 m

35 m/s would describe

• distance

• displacement

• speed

• velocity

5 m/s west would describe

• distance

• displacement

• speed

• velocity

If a puppy runs across a park at a speed of 15 m/s. The puppy has a time of 5 seconds. How far did the puppy run?

• 75 m

• 30 m

• 45 m

• 105 m

Tyler ran 400 meters at an average speed of 20 m/s. How much time did it take to run the 400 meters?

• 20 miles per second

• 20 meters per second

• 8000 seconds

• 20 seconds