Work and Energy

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

Energy due to motion is ____________ energy. 

• Potential 
• Energy
• Kinetic
• Friction

__________ is stored energy. 

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

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

At which point is potential energy greatest?

• W
• X
• Y
• Z

At which point is kinetic energy greatest? 

• W
• X
• Y
• Z

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

What is energy?

• the ability to do work
• mass and volume

A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car

• (a) does not change

• (b) becomes twice to that of initial

• (c) becomes 4 times that of initial

• (d) becomes 16 times that of initial