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Q. The height of a helicopter above the ground is given by h = 3.00t3, where h is in meters and t is in seconds. After 2.00 s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground.

Q. A 55 kg swimmer is standing on a stationary 180 kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +5.1 m/s relative to the shore. Find the recoil velocity that the raft would have if there were no friction and resistance due to the water.

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Category:- Physics
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