Energy and Work

Energy and Work

by Lino Lino

Multiple Choice

Gravity on Jupiter is 24.79 m/s². If a 5 kg box is 32 m above the surface of Jupiter, calculate the GPE of the box.

• 160 J
• 3,966.4 J
• 158.66 J
• 6.45 J

Multiple Choice

A 3 kg bowling ball is lifted 1.5 m off the ground. What is its GPE?

(take g = 9.8 N/kg)

• 4.41 J

• 2 J
• 44.1 J
• 0.5 J

Multiple Choice

A 5-kg object is raised from ground so that it gains 250 J of gravitational potential energy. What is the height of the object?

• 128 m

• 5. 1 m

• 490 m

• 50 m

Multiple Choice

What is the kinetic energy of a 1500 gram object moving at a velocity of 100 m/s

• 112.5 J
• 7,500,000 J
• 75 J
• 7,500 J

Multiple Choice

What is the mass of a moving object that has 100 Joules of kinetic energy and moves at a velocity of 2 m/s?

• 50 kg
• 200 kg
• 25 kg
• 100 kg

Multiple Choice

An 8kg dog chases a cat. if the dog has 400J of kinetic energy. What is the speed of the dog?

• 10 m/s
• 5 m/s
• 1 m/s
• 100 m/s

Multiple Choice

A 4000-kg car increases its speed from 10 m/s to 15 m/s.

What is its increase in kinetic energy?

• 50 000 J

• 200 000 J

• 250 000 J

• 450 000 J

Multiple Choice

A 50-N person is climbing 2 m up a flight of stairs. How much work did they do climbing the stairs?

• 10 J

• 100 J

• 200 J

• 300 J

Multiple Choice

A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds. How much work did they do climbing the stairs?

• 400 J

• 1200 J

• 200 J

• 120 J

Multiple Choice

If you do 40 joules of work lifting a 10N box, how high is the shelf you move it to.

• 400m
• 40m
• 50m
• 4m

Multiple Choice

if you push a cart with a force of 60 N resulting in 120 J of work.. how far did you move the cart? 

• 7200 m
• 0 m
• 2 N 
• 2 m