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Mr. McGregor stands on top of a 15 m high cliff. He fires his rifle horizontally. The bullet speed is 321 m/s. How far from the cliff did the bullet travel?

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how long does it take to fall 15m?
multiply that time * speed to get distance

0.5*g*T^2 = 15.
0.5*9.8*T^2 = 15
T =
d = V*T.

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