The mass of the Sikorsky UH-60A helicopter is 9300 kg. It takes off vertically with its rotor exerting a constant upward thrust of 112 kN.
(a) How fast is the helicopter rising 3 s after it takes off?
(b) How high has it risen 3 s after it takes off?
Strategy: Be sure to draw the free-body diagram of the helicopter.
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