Question
A ball of mass $0.10 \mathrm{kg}$ moving with speed $2.0 \mathrm{m} / \mathrm{s}$ hits a wall and bounces back with speed $1.0 \mathrm{m} / \mathrm{s}$ in the opposite direction. What is the change in the ball's kinetic energy?
Step 1
Step 1: The kinetic energy of an object is given by the formula $\frac{1}{2}mv^2$, where $m$ is the mass of the object and $v$ is its velocity. Show more…
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