What is the speed of a car that travels 50m in 4s?

• 200 m/s

• 12.5 m/s

• 12.5 m

• 200m

Christina traveled 36 miles in 6 hours. If she maintained a constant speed, how many miles did she travel in one hour?

• 6 mph

• 216 mph

• 30 mph

• 42 mph

A quarterback threw a football 50.0 meters. The time the ball was in the air was 3.0 seconds. At what speed did the ball travel through the air?

• 150 m/s

• 0.060 m/s

• 6.0x10^-1 m/s

• 17 m/s

A softball player took 3.5 seconds to run from the batter's box to 1^st base. She can run at 17.1 feet per second. What distance did she cover?

• 4.9 feet

• 0.20 feet

• 60. feet

• There is no correct answer.

In an athletics competition, Camille ran the 5000-meter race at an average speed of 6.0 meters per second. How long did it take her to complete the race in minutes?

• 14 min

• 830 min

• 833 min

• 500 min

A car accelerates from rest (zero velocity) to a speed of 30 m/s in 12 seconds. What is its acceleration?

• 2.5 m/s²

• 360 m/s²

• 0.4 m/s²

• 0.4 m/s

Tags

NGSS.HS-PS2-1

A cyclist in the Tour de France accelerates downhill from 22 m/s to a speed of 37 m/s. This acceleration takes 2 seconds. What is his acceleration?

• 7.5 m/s²

• 11 m/s²

• 18.5 m/s²

• 44 m/s²

Tags

NGSS.MS-PS2-2

A horse accelerates from rest (zero velocity) to 10 m/s with an acceleration of 2 m/s². How long did it accelerate?

• 20 sec

• 0.5 sec

• 12 sec

• 5 sec

Tags

NGSS.HS-PS2-1

A dog runs on a waxed floor at an initial speed of 1.5 m/s. It slides until it stops with an acceleration of –0.35 m/s². How long does it take for the dog to stop?

• 3.3 s

• 0.53 s

• 0.23 s

• 4.3 s

Tags

NGSS.HS-PS2-1

What does it mean if the forces are balanced when analyzing forces in a free body diagram?

• The forces are balanced when the net force is positive.

• The forces are balanced when the net force is negative.

• The forces are balanced when the net force is greater than zero.

• The forces are balanced when the net force is zero.

Tags

NGSS.MS-PS2-2