Two masses of 1 g and 4g are moving with equal kinetic energy. The ratio of the magnitudes of their momenta is
At time t = 0 s particle starts moving along the xaxis. If its kinetic energy increases uniformly with time ‘t’, the net force acting on it must be proportional to
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There are two bodies X and Y with equal kinetic energy but different masses m and 4m respectively. The ratio of their linear momentum is:
Find the potential energy stored in a ball of mass 5 kg placed at a height of 3 m above the ground.
Output of a truck is 4500 J and its efficiency is 50%, the input energy provided to the truck is:
By how much does kinetic energy increase if the momentum is increased by 20%?
When a body slides against a rough horizontal surface, the work done by friction is:
A machine gun fires 60 bullets per minute, with a velocity of 700 m/s. If each bullet has a mass of 50g, find the power developed by the gun.
If a force acts perpendicular to the direction of motion of a body, what is the amount of work done?
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