Kinetic Energy Test

What is the kinetic energy of a 0.135kg baseball thrown at 40 m/s?

• 54 J
• 87 J
• 108 J
• 216 J
• none of the above

Which of the following has the most effect in determining an object's kinetic energy?

• shape
• mass
• speed
• position

The energy of motion is

• kinetic energy
• potential energy
• chemical energy
• thermal energy
• none of the above

A small 20kg canoe is floating down river at a speed of 2 m/s. Calculate the canoe's kinetic energy?

• 22 J
• 40 J
• 80 J
• 400 J
• 10 J

A 13kg sled is moving at a speed of 3 m/s. What would happen to the kinetic energy if the speed were tripled to 9 m/s?

• 3x more Kinetic Energy
• 9x more Kinetic Energy
• 3x less Kinetic Energy
• 9x less Kinetic Energy

An arrow has an initial 70 J of potential energy as its being pulled back in the bow, assuming no air resistance the arrow would have how much kinetic energy after being released?

• 0 J
• 35 J
• 50 J
• 70 J
• more than 70 J

An object that has kinetic energy MUST be

• falling
• at rest
• not moving
• in motion
• elevated

If the __________ of an object is doubled its kinetic energy will double.

• energy
• speed
• mass
• power

The kinetic energy is proportional the the square of the object's ____________.

• energy
• speed
• mass
• power

What is energy?

• Something that takes up space.
• The ability to make something move or change.
• Anything that has mass.