# Science

posted by .

Classify each of the following as examples of kinetic or potential energy.

a) a car driving along a level road.
b) an elastic band is stretched to twice its normal length
c) a book is at rest on the top shelf of a bookcase
d) a lightning bolt produces thunder that travels at 1250 km/h

Is these answers right ?
a) kinetic energy
b)potential energy
c) potential energy
d) kinetic energy

• Science -

a) yes
b) yes
c) yes
d) yes, traveling wave, air particles moving

• Science -

thanks :D

• Science -

You are welcome.

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### physics

a spring with spring constant k= 100N/m is at its equilibrium length a) how much elastic potential energy is stored in the spring?
2. ### Physics

what forms of energy are involved in the following situations?
3. ### Physics

A 156 g hockey puck is attached to a rubber band and rotated with an angular speed of 9.2 rad/s on frictionless horizontal ice. It takes a force of 1.22 N to stretch the rubber band by 1 cm. -------------------------------------------------------------------------------- …
4. ### Physics

Rubber Band A 156 g hockey puck is attached to a rubber band and rotated with an angular speed of 9.8 rad/s on frictionless horizontal ice. It takes a force of 1.12 N to stretch the rubber band by 1 cm. (a) If the original length L …
5. ### Physics

I need help with part b... I found in part a that delta L is .29568m and I think I might be doing something wrong with the units because I can't get the right answer. A 156 g hockey puck is attached to a rubber band and rotated with …
6. ### Physics

A 9.6-m-long elastic band is used to launch a toy glider. Once stretched to a length of 38 m, the band releases 1.7 J of elastic potential energy when you let it contract 0.071 m. What forward force is the band exerting on the toy …
7. ### Physics

A 9.6-m-long elastic band is used to launch a toy glider. Once stretched to a length of 38 m, the band releases 1.7 J of elastic potential energy when you let it contract 0.071 m. What forward force is the band exerting on the toy …
8. ### science

Which type of mechanical energy do the following contain?
9. ### Physics

Consider a simple frictionless roller-coaster. It begins at x = 0, at a height of y = H. Then it drops into a dip, reaching a minimum at x = 100, with zero height (y = 0). Finally, it goes back up at x = 200, but only reaches a height …
10. ### physics

on the road with Kate. If she is driving a 2500kg car going 75km/h a)how much kinetic energy will it process. b)She asks "How high would I have to lift the car for the same amount of potential energy"?

More Similar Questions