## Question

###### An object of mass $2.0 \mathrm{kg}$ (the "projectile") approaches a stationary object (the "target") at $8.0 \mathrm{m} / \mathrm{s}$. The projectile is deflected through an angle of $90.0^{\circ}$ and its speed after the collision is $6.0 \mathrm{m} / \mathrm{s}$. What is the speed of the target after the collision if the collision is elastic?

An object of mass $2.0 \mathrm{kg}$ (the "projectile") approaches a stationary object (the "target") at $8.0 \mathrm{m} / \mathrm{s}$. The projectile is deflected through an angle of $90.0^{\circ}$ and its speed after the collision is $6.0 \mathrm{m} / \mathrm{s}$. What is the speed of the target after the collision if the collision is elastic?

## Answers

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