Aboy standing on a 19.6 meter tall bridge sees a motorboat approaching the bridge at a constant speed. when the boat is 27 meters from the bridge, the boy drops a stone to the water below. if the stone strikes the water 3.0 meters in front of the boat, at what speed is the boat traveling?
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Amoving freight car collides with an identical one that is at rest. if momentum is conserved, what happens to the second car after the collision? it attains the same speed as the first car. it moves at half the speed of the first car. it moves at twice the speed of the first car.
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Aboy standing on a 19.6 meter tall bridge sees a motorboat approaching the bridge at a constant spee...
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