Question

The energy $E$ of a moving object is called its kinetic energy. It is calculated using the formula
$E=\frac{1}{2} m v^2$
where $\mathrm{m}$ is the object's mass in kilograms and $v$ is its speed in meters per second. The units of kinetic energy are
$\frac{\text { kilograms } \cdot \text { meters }^2}{\text { second }{ }^2}$
abbreviated as
$\mathrm{kg} \cdot \mathrm{m}^2 / \mathrm{s}^2$
a. Solve the given formula for $\mathrm{m}$. What is the mass of an object moving at $10 \mathrm{~m} / \mathrm{s}$ with a kinetic energy of
$2500 \mathrm{~kg} \cdot \mathrm{m}^2 / \mathrm{s}^2 ?$