Chapter 4, Problem 56R

To determine

To calculate: Kinetic energy.

Answer to Problem 56R

Kinetic energy is $\underset{\_}{\text{75 J}}$

Explanation of Solution

Given:

Mass = $\text{0}\text{.06 kg}$

Speed = $\text{50 m/s}$

Formula used:

Kinetic energy is given by,

$KE=\frac{1}{2}m{v}^2$

where $m$ is mass and $v$ is speed.

Calculation:

Kinetic energy is calculated as:

$\begin{array}{l}KE=\frac{1}{2}m{v}^2\\ =\frac{1}{2}(0.06{\text{ kg)(50 m/s)}}^2\\ \text{ =75 J}\end{array}$

Conclusion:

Kinetic energy is $\underset{\_}{\text{75 J}}$