Asked by collin

a 4 kg model rocket is launched, shooting 50 kg of burned fuel from its exhaust at an average velocity of 625 m/s. What is the velocity of the rocket after the fuel has burned.? Ignore effects of gravity and air resistance.
Answered by bobpursley
momentum fuel+momentumrocketfinal=0
50*625+4*Vf=0
solve for Vf
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