Energy Review

What is the kinetic energy of a 44 kg cheetah running at 31 m/s?

KE = ½ mv²

The statement that "the energy within a system remains constant and cannot be created or destroyed, only transformed" best sums up _________.

• Something Mr. Lance likes to say.

• Life

• Law of Conservation of Energy

• The scientific method

• Newton's Third Law

What is energy?

• something that picks up things, like a magnet.

• Motion of an object

• ability to do work

• magic rays of sunshine that come down when you're feeling blue.

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

• 676 J
• 3.25 J
• 17J
• 338 J

Which letter shows the ball when it has NO potential energy?

• B

• C

• D

• E

• F

Which letter shows the ball when it has THE MOST kinetic energy?

• B

• C

• D

• E

• F

What is the Total Mechanical Energy at point A?

• 500,000 J

• 400,000 J

• 200,000 J

• 50,000 J

What is the Kinetic Energy at point D?

• 500,000 J

• 250,000 J

• 300,000 J

• 50,000 J

At which point in the picture must the cart have the most MECHANICAL energy?

• Point 1

• Point 2

• Point 3

• They would all be the same

What is the Total Energy at the top?

• 15,000 J

• 3,750 J

• 7,500 J

• 11,250 J