b) Ball A moves with speed v along a horizontal frictionless surface towards a stationary ball B, as shown. A 4.0 kg before collision B 12 kg initial path of ball A 4.0 kg (A 30° 12 kg (B after collision 6.0ms-1 3.5ms-1 Ball A has mass 4.0 kg and ball B has mass 12 kg. The balls collide and then move apart as shown above right. Ball A has velocity 6.0 ms-¹ at an angle of 0 to the direction of its initial path. Ball B has velocity 3.5 ms-¹ at an angle of 30° to the direction of the initial path of ball A. (i) By considering the components of momentum at right-angles to the direction of the initial path of ball A, calculate 0.
