A bullet of mass 10 g is fired into 2 kg pendulum bob and becomes embedded in it.If the pendulum rises to a vertical distance of 10cm..Find the initial velocity of the bullet.

A bullet of mass 10 g and speed 500 m/s is fired into a door and gets embedded exactly at the centre of the door. The door is 1.0 m - wide and weighs 12 kg. It is hinged at one end and rotates about a vertical axis practically without friction. Find the angular speed of the door just after the bullet embeds into it.

A bullet hits a Sand box with a velocity of 20 m/s and penetrates it up to a distance of 6 cm. Find the deceleration of the bullet in the sand box.

A bullet of mass 10 g is fired from a gun with a velocity of 800ms^-1 .After passing through a mud wall 100cm thick its velocity drops to 100ms^-1 .Calculate the average resistance offered by the wall.

From a rifle mass 4kg a bullet of mass 50g is fired with an initia, velocity of 35 ms^-1 . Calculate the initial recoil velocity of the rifle.

A body of mass 10 kg is moving with a velocity 10/sec. When a force is applied on it, after 25 seconds its velocity become 30m/sec. Find the magnitude of the force applied.

A bullet of mass 40gm is fired from a gun of mass 8kg with a velocity of 800 m/s, calculate the recoil velocity of gun.

A 14.5 kg mass, fastened to the end of a steel wire of unstretched length 1.0 m, is whirled in a vertical circle with an angular velocity of 2 rev/s at the bottom of the circle. The cross-sectional area of the wire is 0.065 cm^2 . Calculate the elongation of the wire when the mass is at the lowest point of its path.

A bullet of mass 10 g travelling horizontally with a velocity of 150 m s^-1 strikes a stationary wooden block and comes to rest in 0.03 s. Calculate the distance of penetration of the bullet into the block.

A bullet with a speed of 3 x 10^3 cm//s strikes a wooden target and penetrates a distance of 1.5 cm. Find (i) the acceleration (ii) the time.

A bullet weighing 10 g is fired with a velocity of 800ms −1 . After passing through a mud wall 1 m thick, its velocity decreases to 100ms −1 . Find the average resistance offered by the mud wall.