A 5.4 kg shot rolls along the ground at 15 ms and collides head on with a stationary shot which has a mass of 4.0 kg. The friction force is negligible during the collision After the collision, the 4.0 kg shot moves rolls forward at 2.4 ms 'in the same direction that ttle 5.4 kg shot was initially rolling. Calculate the velocity (size and direction) of the 5.4 kg shot after the collision ​