Q1 a 400-kg model rocket is launched expelling 549 g of, Ask an Expert

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Q1. A 4.00-kg model rocket is launched, expelling 54.9 g of burned fuel from its exhaust at a speed of 690 m/s. What is the velocity of the rocket after fuel has burned?

Q2. A 0.004 kg bullet, moving 536 m/s, strikes a 0.252 kg piece of wood at rest on a frictionless table. The bullet in wood and combined mass moves slowly down the table. Find out the speed of the combination after collision?

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Category:- Physics
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