A base ball of mass 300 \(g\) travelling at 10 ms1 is struck by a bat so as to return it along its original path with a velocity at 6 ms1. Calculate the magnitude of change of momentum occurred in the motion of the base ball by the force applied by the base ball bat.
 
 \(g\)ms1
 
Important!
Note: Enter your answer with 2 decimal digits.