Review: Work Energy Power

Which of the following is the unit for measuring work done?

• Joule
• Watt
• Newton
• Volt

Energy is

• the rate of power
• the capacity to do work
• another word for power
• the force per unit time

Which of the following is the unit for measuring power?

• Joule
• Watt
• Newton
• Volt

A box is being pushed horizontally on a smooth surface by a 10 N force for 6 m. What is the work done on the box by the 10 N force?

• 0.6 J
• 1.7 J
• 16 J
• 60 J

Tags

NGSS.HS-PS3-2

A box of mass 2 kg is being pushed horizontally on a smooth surface for 10 N for 6 m. What is the work done on the box by the 10 N force?

• 12 J
• 48 J
• 60 J
• 120 J

A box of mass 2 kg is being pushed horizontally on a rough surface by a 10 N force for 6 m. Given that the friction between the box and the surface is 4 N, what is the work done on the box by the 10 N force?

• 24 J
• 36 J
• 60 J
• 120 J

A box of mass 2 kg is being pushed horizontally on a smooth surface for 10 N for 6 m. What is the work done by the weight of the box?

• 0 J
• 12 J
• 60 J
• 120 J

A box of mass 2 kg is moving at a constant speed of 3 m/s. What is the kinetic energy of the box?

• 2 J
• 3 J
• 9 J
• 18 J

A box of mass 500 g is moving at a constant speed of 72 km/h. What is the kinetic energy of the box?

• 5 J
• 100 J
• 1296 J
• 1 296 000 J

A box of mass 2 kg increases its speed from 3 m/s to 7 m/s. What is the increase in kinetic energy?

• 4 J
• 16 J
• 40 J
• 32 J