A 0.060-{rm kg} tennis ball, moving with a speed of 4.0 {rm m/s}, has a head-on collision with a 0.10-{rm kg} ball initially moving in the same direction at a speed of 2.6 {rm m/s}.Assuming a perfectly elastic collision, determine the speed of each ball after the collision.Determine the direction of tennis ball after the collision.Determine the direction of 0.10-{rm kg} ball after the collision.