Question

Which describes the relationship between potential and kinetic energy of a ball thrown up in the air as it falls back to the ground?
A.
Gravitational potential energy increases; kinetic energy increases.


B.
Kinetic energy equals gravitational potential energy.


C.
Kinetic energy increases; gravitational potential energy decreases.


D.
The mass of the ball is required to answer this.

Answer 1

The answer is c, because ball is falling so its gravitationl potential energy decreases, but it kinetic energy increases. Energy is always conserved.