Mechanical Energy

A 60-kg skater on the photo is about to move. At this point, what is his kinetic energy?

• 0 Joule

• 3,528 Joules

• 588 Joules

• 360 Joules

At which point along the track will the skater have the biggest kinetic energy?

• A only

• F only

• A and F only

• C only

At which point would the skater have the most kinetic energy?

• A

• B

• C

• D

• E

Katy wants to design a roller coaster where the passenger is traveling super fast at the bottom. What characteristics should the roller coaster have?

• It should be flat and close to the ground. This way the passenger will have an increase in speed because he/she starts out close to the ground.

• It should have no friction and the passenger should start off high above the ground. This way the passenger starts out with a lot of potential energy that can be transformed into kinetic energy.

• It should have lots of friction and be very tall. This way the passenger will speed up because of the large amount of friction.

• It doesn’t matter how you design the rollercoaster the passenger’s speed will be the same at all points on the rollercoaster.

A tiny pig is dropped from the top of a building and lands safely on a trampoline. The tiny pig will have an increase in what type(s) of energy as it falls?

• gravity

• potential energy

• kinetic energy

• all of the these

MOST potential energy

• A

• B

• C

• D

LEAST kinetic Energy

• A

• B

• C

• D

What kind of energy does the cannon ball have at Points A, C and E?

• A-kinetic, C-potential, E-kinetic

• A-kinetic, C-energy, E-kinetic

• A-potential, C-kinetic, E-potential

• A-potential, C-energy, E-potential

What is the "law of conservation of energy"?

• Energy can not be created or destroyed - only transformed from one form to another.
• Energy can be created or destroyed  and be transformed from one form to another.

Look at the picture of the energy graph. Where is the skater on the ramp?

• At the top of the ramp

• At the bottom of the ramp

• In the middle, a little closer to the bottom.

• In the middle, a little closer to the top.