Question

sprinters set in the starting blocks at the beginning of a race rely on what kind of energy conversion?
a. kinetic energy converting to chemical potential energy
b. gravitational potential energy converting to heat energy
c. heat energy converting to kinetic energy
d. chemical potential energy converting to kinetic energy

Explanation:

Sprinters use energy stored in their bodies from food (chemical potential energy). When they start the race, they convert this stored energy into motion (kinetic energy).

Answer:

D. Chemical potential energy converting to kinetic energy