Q1 a 420 kg model rocket is launched expelling 570 g of

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Q1. A 4.20 kg model rocket is launched, expelling 57.0 g of burned fuel from its exhaust at a speed of 675 m/s. What is the velocity of the rocket after fuel has burned? Hint: Ignore the external forces of gravity and air resistance.

Q2. A 95 kg man lying on a surface of negligible friction shoves a 64 g stone away from himself, giving it a speed of 4.0 m/s. What speed does the man obtain as a result?

Reference no: EM13355407

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