Question

Hat is the kinetic energy of a 1.0-kg billiard ball that moves at 5.0 m/s?

A.
5.0 J

B.
6.5 J

C.
10.0 J

D.
12.5 J

Answer 1

Kinetic energy is the energy that a body possesses by being in motion. It is calculated by the expression:

Kinetic Energy = 1/2 (mv²)
Kinetic Energy = 1/2 (1 kg) (5m/s)²
Kinetic Energy = 12.5 J

Therefore, the correct answer from the choices above is option D.