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

a) yes

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

thanks :D

You are welcome.

Hi, is this just a Science website or can I also get Math answers here?

Yes, your answers are correct.

To determine whether each example represents kinetic or potential energy, you can consider the definitions of both types of energy:

- Kinetic energy refers to the energy possessed by an object due to its motion.
- Potential energy refers to the energy possessed by an object due to its position or condition.

With that in mind, let's analyze each example:

a) A car driving along a level road has motion, so it possesses kinetic energy.

b) When an elastic band is stretched, its energy is stored in its increased potential to return to its original shape. This is an example of potential energy.

c) A book that is at rest on the top shelf of a bookcase does not possess motion, but it has the potential to fall. Therefore, it has potential energy.

d) Thunder produced by a lightning bolt travels at 1250 km/h. Since it involves motion, it represents kinetic energy.

By applying these definitions, you correctly identified the energy type for each example.