A ball moving with a momentum of `15ms^(-1)` strikes against the wall at an angle of `30^@` and is reflected with the same momentum at the same angle. Calculate the impulse.

An object of mass 1 kg travelling in straight line with a velocity of 10 ms^(-1) collides with it and sticks to a stationary wooden block of mass 5 kg. Then both move off together in the same straight line. Calculate the total momentum before the impact and just after the impact. Also calculate the velocity of combined object.

A person sitting in the comprtment of a train moving with the force at an angle of 120^@ w.r.t velocity vector .what is the angle between the impulse vector and change in momentum vector?

A ball of mass 100 g moving with a velocity of 10ms^-1 is stopped by a boy in 0.25sec. Calculate the force applied by the boy to stop the ball.

A car moving with a velocity of 20 ms^(-1) is stopped in a distance of 40 m. If the same car is travelling at double the velocity, the distance travelled by it for same retardation is?

A deuteron and an alpha particle having same momentum are in turn allowed to pass through a magnetic field B, acting normal to the direction of motion of the particles. Calculate the ratio of the radii of the circular paths described by them.

A projectile is projectile at an angle of 15^@ to te horizontal with speed v. if another projectile is rojected with the same speed, then at what angle with the horizontal it must be projected so as to have the same range.