If two balls, each of mass 0.06 kg, moving in opposite directions with speed 4 m/s, collide and rebound with the same speed, then the impulse imparted to each ball due to other is

The balls exchange velocity on collision initial momentum of each ball before collision=mv=0⋅06×4=0⋅24kg−m/s Final momentum of each ball after collision =m(−v)=0⋅06×(−4)=−0⋅24kg⋅m/s ∴ change in momentum = Initial momentum - Final momentum =0⋅24−(−0⋅24)=0⋅48kg−m/s