Question

1) IMPULSE IS THE PRODUCT OF ?
2) WHATS THE TIME RATE OF CHANGE OF MOMENTUM ?

Answer 1

Impulse is the product of the force and the time. Impulse is a vector quantity. It has the same direction as the applied force.

Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle.