untitled

The energy associated with motion is called

• Kinetic energy
• Elastic potential energy
• Gravitational potential energy
• Nuclear energy

When you rub your hands together on a cold day, you use friction to convert

• Mechanical energy into thermal energy
• Thermal energy into nuclear energy
• Nuclear energy into electrical energy.
• Electrical energy into radiant energy

Energy from a compressed spring would be an example of...

• kinetic
• elastic
• gravitational
• chemical

How much work is being done with 200 N of force to the right on object that moves 426 meters to the right? (assume the force and displacement are in the same direction)

• 85,200 J

• 45,620 J

• 90,480 J

• 62,329 J

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

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

When you release a stretched rubber band, the rubber band has ________ energy. 

• kinetic 
• potential
• none of the above
• all of the above 

What is the formula for calculating the total amount of mechanical energy?

• ME = KE + PE

• KE = ME + PE

• PE = mgh

• ME = 1/2 mv²

A box is pushed by 20 N force to the right and displace for 0.1 m. What is the work done?

• 0.005 J

• 0.1 J

• 1 J

• 2 J

What is the formula of work?

• W = F / d

• W = F + d

• W = F x d

• W = F - d

A car has speed 5 m/s and the mass of the car 1000 kg. What is the kinetic energy of the car?

• 12500 J

• 25000 J

• 5000 J

• 2500 J