PHY 101 Exam 1 Review

A sprinter accelerates from rest to 9.0 m/s in 3.0 s. What is the sprinter’s average acceleration?

• 3.0 m/s²

• 9.0 m/s²

• 27.0 m/s²

• 0.33 m/s²

Tags

NGSS.HS-PS2-1

What is the formula for kinetic energy (KE)?

• KE = ½mv²

• KE = mgh

• KE = Fd

• KE = ma

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

Which formula would you use to calculate the work done by a force?

• W = Fd

• W = mg

• W = ma

• W = ½mv²

Which formula would you use to calculate the average velocity (Vavg) of an object?

• Vavg = Δx/Δt

• Vavg = d/t

• Vavg = gt

• Vavg = ½mv²

Which of the following is the correct formula for acceleration (a)?

• a = Δv/Δt

• a = d/t

• a = mg

• a = Fload/Feffort

Tags

NGSS.HS-PS2-1

If a force is applied to an object and it moves a certain distance, which formula gives the work done?

• W = Fd

• W = ma

• W = mg

• W = ½mv²

If the distance traveled is 100 meters and the time taken is 20 seconds, what is the average velocity?

• 5 m/s

• 2 m/s

• 20 m/s

• 0.2 m/s

A boat moves 3.0 km east and 4.0 km north. Find the boat’s displacement (magnitude and direction).

• 5.0 km, 53.1° north of east

• 7.0 km, 45° north of east

• 1.0 km, 30° north of east

• 5.0 km, 45° north of east

A 5.0 kg block is pushed with a net force of 20 N. What is its acceleration?

• 4.0 m/s²

• 2.0 m/s²

• 5.0 m/s²

• 10.0 m/s²

Tags

NGSS.HS-PS2-1

A 50 kg person stands in an elevator accelerating upward at 2.0 m/s². What is the weight on the person?

• 590 N

• 700 N

• 500 N

• 400 N

Tags

NGSS.HS-PS2-1