As we know, momentum= mass*velocity acc. to ques. mass = 2kg momentum= 25kg-m/s momentum = mass*velocity (speed) velocity (speed) = momentum/mass velocity(speed)=25/2 =12.5m/s

Momentum = (mass) x (speed) (25 kg-m/s) = (2.0 kg) x (speed) Speed = (25 kg-m/s) / (2.0 kg) = 12.5 m/s