A 50 gram bullet moving with a velocity of 10 `ms^-1` gets embeded into a 950g stationary body. The loss in KE of the system will be

A proton moving with a velocity of 0.125xx10^(5) ms ^(-1) Collides with a stationary helium atom. The velocity of the proton after the collision is

A body of mass a moving with a velocity b strikes a body of mass c and gets embedded into it. The velocity of the systems after collision is

A ball of mass 1 kg moving with a velocity of "0.4 ms"^(-1) collides with another stationary ball. After the collision, the first ball moves with a velocity of 0.3ms^(1) in a direction making an angle of 90^(@) with its initial direction. The momentum of the second ball after the collision will be (in kg ms^(-1) )

A bullet moving with a velocity of 30sqrt(2) ms^(-1) is fired into a fixed target. It penetrated into the target to the extent of s metres. If the same bullet is fired into a target of thickness (s)/(2) metres and of the same material with the same velocity, then the bullet comes out of the target with velocity

A body of mass 5 xx 10^(3) kg moving with speed 2 m/s collides with a body of mass 15 xx 10^(3) kg inelastically & sticks to it. Then loss in K.E. of the system will be :

A bullet of mass 10g travelling horizontally with a velocity of 150 ms^(-1) strikes a stationary wooden block and come to rest in 0.03 s . Calculate the distance of penetration of the bullet into the block. Also, Calculate the magnitude of the force exerted by the wooden block on the bullet,

A ball moving with velocity 2 ms^(-1) collides head on with another stationary ball of double the mass. If the coefficient of restitution is 0.5 , then their velocities (in ms^(-1) ) after collision will be

A bullet of mass m moving with velocity v strikes a block of mass M at rest and gets embedded into it. The kinetic energy of the composite block will be

A body is projected horizontally with a velocity of 4 ms^(-1) from the top of a high tower. The velocity of the body after 0.7 is nearly (Take, g = 10 ms^(-2))

The wavelength of an electron moving with velocity of 10^(7)ms^(-1) is