Question

Roger Maris swung a bat which had a mass of 2 Kg at a velocity of 45 m/s. How many joules of kinetic energy could he give to a ball?

Answer 1

2025 joules

Explanation:

Given:

Mass (m) = 2 kg

Velocity (v) = 45 m/s

The kinetic energy is given by the following equation:

`K_E=(1)/(2)mv^2`

We replacing:

`\begin{gathered} K_E=(1)/(2)\cdot2\cdot45^2 \\ K_E=2025\text{ J} \end{gathered}`

The kinetic energy is equal to 2025 joules.