An object of mass 5kg moving with a speed of 30m/s is suddenly hit by another object moving in thesame direction, thereby changing the speed of the former object to 60m/s. Calculate the impulse received by the first object.
Impulse = Change in momentum = (mass x change in velocity) = (5kg x (60m/s - 30m/s)) = 150 kg m/s
A body of mass 0.4kg is fired with a velocity of 600m/s into a static train of mass 0.085kg. Given that the static train can move freely, calculate the final kinetic energy after the impact.
