A bullet of mass 10 g leaves a rifle at an initial velocit of 1000 m/s and strikes a target at the same level with a velocity of 100 m/s. The work done in joule to overcome the resistance of air will be

A bullet of mass 10g leaves a rifle at an intial velocity of 1000m/s and strikes the earth at the same level with a velocity of 500m/s. The work done in joule to overcome the resistance of air will be

A bullet of mass 10g leaves a rifle at an intial velocity of 1000m/s and strikes the earth at the same level with a velocity of 500m/s. The work done in joule to overcome the resistance of air will be

A bullet of mass 20 g leaves a riffle at an initial speed 100 m/s and strikes a target at the same level with speed 50 m/s. The amount of work done by the resistance of air will be

A bullet of mass 20 g leaves a riffle at an initial speed 100 m/s and strikes a target at the same level with speed 50 m/s. The amount of work done by the resistance of air will be

A bullet of mass 100 g strikes a wooden plank with a velocity of 300 ms^-1 and emerges with a velocity 100 ms^-1 .Calculate the work done by the resistive force on the bullet

A bullet of mass 20 g moving with a velocity of 500 m/s, strikes a free and goes out from the other side with a velocity of 400 m//s. Calculate the work done by the bullet in joule in passing through the tree.

A 50 gram bullet leaves a rifle with a velocity of 400 m//s , and the rifle recoils with a velocity of 0.5 m//s . What is the mass of the rifle

A bullet of mass 10 g is fired with a velocity of 100 m/s from a rifle of mass 2.5 kg, the recoil velocity of the rifle is

A bullet of mass 10 g is fired with a velocity of 100 m/s from a rifle of mass 2.5 kg, the recoil velocity of the rifle is

A bullet strikes a plank of thickness 5 cm with a velocity of 1000 m/s and emerges out with a velocity of 400 m/s, the average retardation of the bullet is