A block of metal weighs 2 kg is resting on a frictionless plane. It is struck by a jet releasing water 1 kg/s and at a speed of 5 m/s. The initial acceleration of the block will be ?

A rocket of initial mass 6000 kg ejects gases at a constant rate of 16 kg/s with constant relative speed of 11 km/s. What is the acceleration of the rocket one minute after the blast.

A steel ball of mass m is initially at rest on a horizontal frictionless surface. It is struck head on by another steel ball of mass 2m travelling with a velocity of 50 cm/s. Calculate the velocities of the two balls after a collision assuming it to be elastic.

A car is moving with a speed of 30 m/s on a circular path of radius 500m. It's speed is increasing at the rate of 2 m/s^2 . Find acceleration of the car.

A block of metals weighing 2 kg and 1kg are in contact with each other on a frictionless table. When a horizontal force of 3.0N is applied to the block of mass 2 kg. The value of force constant between the blocks is

The coefficient of friction between a body and the surface of inclined plane at 45^@ is 0.5. If g=9.8m/s^2 The acceleration of the body downwards in m/s^2 is

A box of mass 25 kg starts from rest and slides down an inclined plane 8 meter long and 5 meter high. It is found to move at the bottom at 7 m/s. What is the force of friction