A ball of mass 0.2kg strikes an obstacle and moves at 60^(@) to its original direction. If its speed also changes from 20m//s" to "10m//s, the magnitude of the impulse received by the ball is

A ball of mass 0.2kg strikes an obstacle and moves at 60^(@) to its or

1.	A ball of mass 0.2kg strikes an obstacle and moves at 60^(@) to its original direction. If its speed also changes from 20m//s" to "10m//s, the magnitude of the impulse received by the ball is
Answer» `2sqrt7Ns` `2sqrt3Ns` `2sqrt5Ns` `3sqrt2Ns` SOLUTION :`DeltaP_(X)=m(v_(x)-u_(x)), DeltaP_(y)=mv_(y)`, `J=DeltaP=sqrt(Deltap_(x)^(2)+Deltap_(y)^(2))`