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seeindubble12

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First time posting, I hope I do this correctly!

I am struggling to grasp this concept. This is my attempt at solving. If I am completely off base, will some explain to me again how it works. Our instructor explained it to us with a very detailed formula which, I must confess, has caused me more than a little anxiety because I am not following! Thanks for the help!

I am struggling to grasp this concept. This is my attempt at solving. If I am completely off base, will some explain to me again how it works. Our instructor explained it to us with a very detailed formula which, I must confess, has caused me more than a little anxiety because I am not following! Thanks for the help!

**1. Rifle (suspended by strings) - 2kg; fires bullet of 0.01 kg at speed of 200 m/s. What is the recoil velocity of the rifle?****2. (mv) + (mv) = (M + m)(v)****3. (0.01)(200) + 0 = (0.01 +2)(v)**

2=2.01(v)

divide both sides by 2.01, and the answer is v= .992=2.01(v)

divide both sides by 2.01, and the answer is v= .99

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