Having gone through a plank of thickness h, a bullet changed its velocity from `v_(0)` to `v_(1)`. Find the time of motion of the bullet on the plank, assuming the resistance force to be proportional to the square of the velocity.

A bullet leaving the muzzle of a rifle barrel with a velocity v penetrates a plank and loses one-fifth of its velocity. It then strikes second plank, which it just penetrates through. Find the ratio of the thickness of the planks, supposing the average resistance to the penetration is same in both the cases.

A bullet leaving the muzzle of a rifle barrel with a velocity v penetrates a plank and loses one-fifth of its velocity. It then strikes second plank, which it just penetrates through. Find the ratio of the thickness of the planks, supposing the average resistance to the penetration is same in both the cases.

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

A bullet enters a wooden block with velocity 120 m/s. The bullet travels 1.5 s in the block before its velocity reduces to zero due to resistance force which is proportional to the square root of the velocity. The distance travelled by the bullet in the wooden block is

A bullet enters in a piece of wood with velocity v_(0) and the resistive force acting on the bullet in the vood is proportional to v^((1)/(3)) . If the total distance travelled by the bullet is proportional to (v_(0))^(beta) , then the value of beta is

A bullet is fired with a velocity v from a gun of mass M. what will be the recoil velocity of the gun if the mass of the bullet is m ?

A gun fires N ' bullets per second,each of mass m with velocity v .The force exerted by the bullets on the gun is

A gun fires N bullets per second, each of mass m with velocity v. The force exerted by the bullets on the gun is :