Question

A rocket of initial mass m* has a mass m*(1-t/3) at time t. the rocket is launched from rest vertically upward under gravity and expels burnt fuel at a speed u relative to the rocket vertically downward. find the speed of rocket at t =1

Answer 1

Answer:

the rocket is launched from rest vertically upward under gravity and expels burnt fuel at a speed u relative to the rocket

Answer 2

Explanation:

inexhaustible

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