Question

A baseball with a mass of 0.15 kg is moving at a speed of 40 m/s. What is

the baseball's kinetic energy?

Answer 1

120 J

Step-by-step explanation:

KE = 1/2 mv²

KE = 1/2 (0.15)(40)²

KE = 1/2 (0.15)(1600)

KE = 1/2 (240)

KE = 120 J

Answer 2

120 J

Step-by-step explanation:

KE = mv²/2 = (0.15 kg * [40 m/s]²)/2 = 120 J