8th Grade Chapter 7 Review

ability to do work

a transfer of energy

energy of motion

Which has a greater impact on KE?

• mass
• velocity

As mass increases, KE ...

• increases
• decreases
• stays the same

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

Calculate the kinetic energy of a moving 4 kg object travelling at a velocity of 3 m/s.

• 18 J
• 36 J
• 12 J
• 6 J

How much kinetic energy does a moving 6 kg object have if it moves with a velocity of 3 m/s?

• 27 J
• 18 J
• 9 J
• 2 J

What is the kinetic energy of a 4kg shotput thrown with a velocity of 13m/s

• 676 J
• 3.25 J
• 17J
• 338 J

What is the kinetic energy of a ball with a mass of 5kg rolling at 10m/s

• 50 J
• 5 J
• 250 J
• 25 J