Laws of Motion

Question: At a certain instant of time the mass of a rocket going up vertically is 100 kg. If it is ejecting 5 kg of gas per second at a speed of 400 m/s, the acceleration of the rocket would be (taking $g = 10\,m/{s^2})$

1) $20\,m/{s^2}$

2) $10\,m/{s^2}$

3) $2\,m/{s^2}$

4) $1\,m/{s^2}$

Solution:

Explanation: No Explanation

Conservation of Linear Momentum Impulse NLM

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