Momentum worksheet (Mechanics 1)

Thanks for leaving a review, I appreciate the feedback. If you can tell me where you felt it was a bit confusing I could have another look at it to try to make things clearer. The answers to questions where you are asked to find the change in momentum all have a plus/minus sign because the intial direction of motion of the object can be arbitrarily taken to be the positive or the negative direction - I didn't think that it was necessary to explain that on the worksheet as students using the sheet would already be familiar with that idea.