Use the momentum vs. time graph below to answer the following questions. let east be the positive direction & west be the negative direction. express all answers in the appropriate mks units. momentum vs. time graph a.) identify when the object was not moving. b.) over what period of time was the object speeding up? to c.) over what period of time was the object slowing down? to d.) over what period of time was the object's speed constant? to e.) state the magnitude & direction of the object's impulse during the following 3 time frames: 0 to 150 s → 150 to 200 s → 200 to 250 s → f.) determine the magnitude & direction of the object's total impulse. g.) state the magnitude & direction of the net force on the object during the following 3 time frames: 0 to 150 s → 150 to 200 s → 200 to 250 s →