A body of mass M hits normally on a rigid wall with velocity V and bounces back with the same velocity. The impulse experienced by the body is

If two balls, each of mass 0.06 kg, moving in opposite directions with speed 4 m/s, collide and rebound with same speed, then impulse imparted to each ball due to other is

Three different objects of masses m₁,m₂ and m₃ are allowed to fall from rest and from the same point O along three different frictionless paths. The speeds of the three objects on reaching the ground will be in the ratio of

As shown in the figure at point O, a mass m is performing vertical circular motion. The average velocity of the particle is increased. Then at which point will the string break?

A weight w is suspended from the midpoint of a rope, whose ends are at the same level. In order to make the rope perfectly horizontal, the force applied to each of its ends must be

A car of mass m is moving with momentum p.If μ be the coeffecient of friction between the tyres and the road, what will be stopping distance due to friction alone ? 

A cricket player catches a ball of mass 100g and moving with a velocity of 25ms^-1. If the ball is caught in 0.1s, the force of the blow exerted on the hand of the player is

A machine gun fires a bullet of mass 40 g with a velocity 1200 m/s.The man holding it can exert a maximum force of 144 N on the gun.How many bullets can he fire per second at the most ?

An object is moving on a plane surface with uniform velocity 10 ms^-1 in presence of a force 10 N. The frictional force between the object and the surface is

A fireman wants to slide down a rope. The breaking load for the rope is 3/4^th of the weight of the man. With what minimum acceleration should the fireman slide down? Acceleration due to gravity is g.