Question

question 7 of 10
which is an example of kinetic energy?
a. a compressed spring
b. a ball sitting at the top of a ramp
c. the energy stored in ethanol
d. a hockey puck sliding across the ice

Explanation:

Kinetic energy is the energy of motion. Option A (compressed spring) has elastic potential energy, Option B (ball at top of ramp) has gravitational potential energy, Option C (energy in ethanol) is chemical potential energy. Option D (hockey puck sliding) involves motion, so it has kinetic energy.

Answer:

D. A hockey puck sliding across the ice