A rigid ball of mass m strikes a rigid wall at 60^(@) and gets reflected without loss of speed as shown in the figure. The value of impulse imparted by the wll on the ball will be

A rigid ball of mass m strikes a rigid wall at 60^(@) and gets reflect

1.	A rigid ball of mass m strikes a rigid wall at 60^(@) and gets reflected without loss of speed as shown in the figure. The value of impulse imparted by the wll on the ball will be
Answer» MV 2mv mv/2 mv/3 Solution :(a) Impulse is imparted due to CHANGE in perpendicular components of MOMENTUM of ball. `J=Deltap=mv_(s)-mv_(i)` `mv cos 60^(@)-(-mv cos60^(@))` `=2mv cos 60^(@)=2 mvxx(1)/(2)`