A ball of mass 0.20 kg hits a wall at an angle of 45^(@) with a velocity of 25 m/sif the ball reboundat 90^(@)to the direction of incidence calculate the change in momentum of the ball.

A ball of mass 0.20 kg hits a wall at an angle of 45^(@) with a veloci

1.	A ball of mass 0.20 kg hits a wall at an angle of 45^(@) with a velocity of 25 m/sif the ball reboundat 90^(@)to the direction of incidence calculate the change in momentum of the ball.
Answer» Solution : CHANGE is momentum`= (-mv COS 45^(@))` `-(mv cos 45^(@))` dp= 2mv `cos 45^(@) ` `\|vec(dp)\| = 2xx 0.2xx 25 xx (1)/(SQRT(2))` `:.Dp = 5 sqrt(2) Ns`