Laws of Motion

Related Questions

• 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 $g = 10\,m/{s^2})$

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• The upper half of an inclined plane of inclination $\theta$ is perfectly smooth while the lower half is rough. A body starting from the rest at top comes back to rest at the bottom if the coefficient of friction for the lower half is given by

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• A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. by what velocity the gun rebounds backwards

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• In an elevator moving vertically up with an acceleration g, the force exerted on the floor by a passenger of mass M is

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• A solid disc of mass M is just held in air horizontally by throwing 40 stones per sec vertically upwards to strike the disc each with a velocity 6 $m{s^{ - 1}}$. If the mass of each stone is $0.05kg$ what is the mass of the disc$(g = 10m{s^{ - 2}}$)

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