PE and KE

Energy due to motion is ____________ energy. 

• Potential 
• Energy
• Kinetic
• Friction

__________ is stored energy. 

• Potential
• Kinetic
• None of the above 
• All of the above 

Conservation of energy states that energy cannot be ________ or ________, but can be altered from one form to another.

• created, destryoed
• gravity, force
• heat, created

The amount of kinetic energy an object has depends on its:

• Mass and volume
• Volume and friction
• Mass and speed
•  Speed and density

When is potential energy transformed into kinetic energy?

• When an object at rest is lifted to a higher elevation
• When an object at rest remains at rest
• When an object at rest is put into motion 
• When an object in motion is stopped and put at rest 

At which point is potential energy greatest?

• W
• X
• Y
• Z

What is the kinetic energy of a zorb and human with a total mass of 90Kg rolling at 10m/s?

• 3,700J

• 900J

• 4,500J

• 6,500J

An explosion of gas from a Hawaiian volcano blows a rock into the sky. The rock has 2000J of kinetic energy. What was its mass if the rock had a velocity of 20m/s?

• 200Kg

• 20,000Kg

• 10Kg

• 200Kg

You serve a volley ball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30m/s. How much kinetic energy does the ball have?

• 1890 J

• 3780 J

• 945 J

• 31.5 J

A golf pro swings his driver which has a mass of 0.75Kg at a velocity of 60 m/s. Calculate the kinetic energy of the club.

• 2700 J

• 16.9 J

• 1350 J

• 45 J