Question

A pitcher throws a 0.145-kg baseball at a speed of 30.0 m / s. How much kinetic energy does the ball have?

Answer 1

Answer:

Mass given = 0.145 kg

Velocity = 30.0 m/s

Now , we know ,

Kinetic energy = 1/2 mass × (velocity)^2

=> K.E. = 1/2 × 0.145 × (30)^2

=> K.E. = 65.25 J .

Answer : Kinetic energy of the ball is 65.25 J .