Answer:
100 N is the answer of the question
Weight equals mass times gravitational acceleration=400N, so mass=400/9.8=41kg approx.
The momentum change =mass*velocity change. But sincevelocity change is not known another strategy must be used to find the momentum change. The strategy involves first finding the impulse (F*t = 1.0 N*s). Since impulse = momentum change, the answer is 1.0 N*s.
