Brett takes a slap shot, exerting an(adsbygoogle = window.adsbygoogle || []).push({}); average force ofon the puck for 0.116 seconds.16.8 newtonsThe puck has a mass of 0and was.110 kilogramsinitially moving directly away from the goal at. How fast does it move toward the goal?3.4 meters per second

21.127 or -21.127 is not the correct answer. I am unsure which direction would be considered negative momentum. Here is my work.

Impulse= 1.95

1.95=change in momentum

1.95= mass X change in velocity

1.95= .110kg X (vf-3.4)

I divided 1.95 by .110kg and then added 3.4 to the other side. According to my online homework checker this is wrong. Could someone please help me solve this overthought problem? Perhaps something isn't negative when it should be.

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# Homework Help: Simple Momentum Question

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