Work and Energy

What is the unit used to measure work?

• Joule

• Watt

• Newton

• Pascal

What kind of energy is in a moving skateboard?

• Potential

• Kinetic

What kind of energy is in a rock at the edge of a cliff?

• Potential

• Kinetic

Calculate the KE of a runner that has a mass of 80 kg and is running at a velocity of 8 m/s

• 5120 J

• 320 J

• 640 J

• 2560 J

____________ is the ability to cause change. 

• Energy 

• Force 

• Friction

• Motion

At which point is potential energy greatest?

• W

• X

• Y

• Z

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 

• Both the potential energy and kinetic energy decrease

• The potential energy decreases while the kinetic energy increases 

• The kinetic energy decreases while the potential energy increases 

• Bothe the potential energy and kinetic energy increase 

At which point is kinetic energy greatest? 

• W

• X

• Y

• Z

When a pendulum swings, at which point is kinetic energy highest?

• 1

• 2

• 3

• 4

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