1. The problem statement, all variables and given/known data Use the impulse-momentum theorem to find how long a falling object takes to increase its speed from 5.50 to 9.00 . 2. Relevant equations deltaP = impulse P = momentum (m*v) impulse = J (integral from ti to tf) 3. The attempt at a solution 3.5 seconds, though, I knew before that it was incorrect.