Energy work done and power

What is the unit for work done?

• N

• J

• m

• W

An object is moved 2m with a force of 10N what is the work done?

• 20J

• 5J

• 0.2J

• 200J

Which one is NOT a type of energy?

• Kinetic

• GPE

• Magnetic

• Electrical

What is the equation for GPE?

• m x g x h

• m x v

• f x d

• m x h

What is the definition for power?

• How fast you can move

• How hard you can push

• The amount of energy transferred per second

• The amount of energy every minute

A car is travelling at 10m/s and has a mass of 200kg what is the kinetic energy?

• 1000J

• 100J

• 10,000J

• 20,000J

A battery pack supplies 20J of energy every 10s what is the power?

• 2W

• 20W

• 200W

• 0.2W

A light bulb is supplied with 100J of energy and 30J is wasted as heat - what is the efficiency?

• 30%

• 10%

• 70%

• 20%

Which of the following energy resources DOES NOT get its energy from the sun?

• Geothermal

• Coal

• Tidal

• Biomass

Which of the following is NOT renewable?

• Nuclear

• Tidal

• Solar

• Wind