what is the rate of change in momentum directly proportional to?
Momentum:
dpdt=dmvdt=mdvdt=ma=F
Hence, rate of change in momentum is directly proportional to Force.
According to Newton's second law of motion, force is directly proportional to the rate of change of momentum provided
The rate of change of momentum of a body is directly proportional to the force applied and change in momentum takes place in the same direction as the applied force.