Potential Energy and Kinetic Energy

Energy is the capacity to do

• The dishes

• The hokey cokey

• Work

• Travel

The unit of Energy is

• the Watt

• the Newton

• the Meter

• The Joule

The unit of force is

• The Newton

• m/s²

• The Kilogram

• The Joule

A shell of mass 5 kg is travelling at 400 m/s. Calculate its Kinetic Energy

• 200,000J

• 400,000J

• 600,000J

• 800000J

An apple of mass 0.5 kg has Kinetic Energy of 100J. What is the apple's speed?

• 5 m/s

• 10 m/s

• 15 m/s

• 20 m/s

A rock is moving at 10 m/s and has Kinetic Energy of 200 J. What is the mass of the rock?

• 3 kg

• 4 kg

• 5 kg

• 6 kg

The total energy of a projectile is 2000 J. If the Kinetic Energy of the projectile is 1500 J, what is the Potential Energy of the projectile?

• 100 J

• 300 J

• 500 J

• 700 J

A truck of mass 10, 000 Kg is at the top of a hill of height 39 m. What is the PE of the truck?

• 39000 J

• 390000 J

• 3900000 J

• 39000000 J

An 80 kg man has potential energy of 160,000 J. How far is he from the ground?

• 20 m

• 200 m

• 2000 m

• 20,000 m

h₁ is 30 m and h₂ is 14 m. If the roller coaster buggy has a mass of 1500 kg, how much potential energy does it lose going from point 1 to point 4?

• 120,000 J

• 180,000 J

• 240,000 J

• 300,000 J