5) A wagon of mass 20 tonne moving along a track at 3.33 m/s, collides with a second wagon of mass 10 tonne moving at 1.94 m/s; both wagons are moving in the same direction Immediately after collision, the 10 tonne wagon moves on at 1 km/h, calculate the velocity of a 20 tonne wagon after th impact and the impulse between the wagons.
