hilby97831 hilby97831

25-04-2024
Physics

Answered

A rocket of total mass m is traveling at a speed v. the engine of the rocket is fired and fuel is used up. the mass of the rocket decreases to M/2 and its speed increases to 2v.
what happens to the kinetic energy of rocket
a it doubles
b it halves
c it increases by a factor of four
d it stays the same

Answer :

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