The impulse-momentum theorem is:Originally Posted by Natasha1
where is the average net force applied to the object.
a) The acceleration is constant, so the net force applied is constant. I will call the net force F for simplicity.
Thus F = 833 N.
b) The acceleration is now a linear function of time over the first 30 seconds of motion. Thus the net force is also a linear function of time. Using the Calculus version of the impulse-momentum theorem:
The problem I am having here is that the acceleration is a linear function of time, and we don't have the constant: , giving .
In terms of c: