A steel sphere of mass 100gm moving with a velocity of 4m/s collides with a dust particle elastically moving in the same direction with a velocity of 1m/s. The velocity of the dust particle after the collision is (dust partical is of mass neglisiable

A steel sphere of mass 100gm moving with a velocity of 4m/s collides w

1.	A steel sphere of mass 100gm moving with a velocity of 4m/s collides with a dust particle elastically moving in the same direction with a velocity of 1m/s. The velocity of the dust particle after the collision is (dust partical is of mass neglisiable
Answer» 8m/s 7m/s 6m/s 9m/s Answer :B