Okay, so I have a test tomorrow afternoon, and I’ve gotten through most of my review. I’m stuck on one because I don’t know what equation to use. You don’t have to work through the problem, just put me in the right direction so that I can do the math myself?
1. When Bowling, your physics buddy asks how much impulse is needed to stop a 10-kg bowling ball moving at 6 m/s. What is your answer?
2. A 2-kg ball of putty moving to the right has a head on inelastic collision with a 1-kg putty ball moving to the left. If the combined blob doesn’t move just after the collision, what can you conclude about the relative speeds of the balls before they collided?
(For this one, am I correct in thinking that the 2-kg putty is moving at half the speed of the 1-kg putty? That just seems logical, but I don’t know what equation to use)
for the first question F=MA or F=Mv
using that I think your second answer is right.
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