Question

A 58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move towards 3rd base with a velocity of 38.0 m/s. What is the kinetic energy of the baseball?

Answer 1

101.08 joules.

Explanation:

Given:

m = 0.140 kg

v = 38.0 m/s

Kinetic energy can be calculated using the following formula:

`E=(1)/(2)\cdot m\cdot v^2`

Replacing

`\begin{gathered} E=(1)/(2)\cdot0.140\cdot(38.0)^2 \\ E=101.08\text{ J} \end{gathered}`

The kinetic energy of baseball is 101.08 joules.