Laws of Motion

Related Questions

• In the above question, the acceleration of the car will be

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• A block of mass 1 kg slides down on a rough inclined plane of inclination 60o starting from its top. If the coefficient of kinetic friction is 0.5 and length of the plane is 1 m, then work done against friction is (Take g = 9.8 m/s2)

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• A 5000 kg rocket is set for vertical firing. The exhaust speed is $800\,m{s^{ - 1}}$. To give an initial upward acceleration of $20\,m{s^{ - 2}}$, the amount of gas ejected per second to supply the needed thrust will be $(g = 10\,m{s^{ - 2}})$

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• A man weighing 80 kg is standing in a trolley weighing 320 kg. The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley with a speed of 1 m / s, then after 4 sec his displacement relative to the ground will be

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• 300 Joule of work is done in sliding up a 2 kg block on an inclined plane to a height of 10 metres. Taking value of acceleration due to gravity ‘g’ to be 10 m/s2, work done against friction is

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