# CATapult!

Classical Mechanics Level 1

A $$9 \mathrm{kg}$$ cat (including armor, so he isn't hurt by this) is launched at $$70 \mathrm{\frac{m}{s}}$$ at an unsuspecting enemy. The enemy has a mass of $$63 \mathrm{kg}$$. Assuming a conservation of energy, with the cat retaining no energy, at what speed is the enemy bowled over? (Use units of $$\mathrm{\frac{m}{s}}$$ and round to the nearest hundredth.)

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