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consider a 5.0 kg object traveling to the right at 25. m/s and colliding with a stationary 1.0 kg object. What is the total momentum of the system?

 Feb 21, 2019

Best Answer 

 #1
avatar+6045 
+1

\(\text{momentum of a given system (excluding friction) is constant, so just pick any time and compute it}\\ \text{we'll pick a time prior to the collision}\\ p = (5~kg)(25~m/s)\hat{i} + (1~kg)(0~m/s) = 125\hat{i}~\dfrac{kg \cdot m}{s}\)

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 Feb 21, 2019
edited by Rom  Feb 21, 2019
edited by Rom  Feb 21, 2019
 #1
avatar+6045 
+1
Best Answer

\(\text{momentum of a given system (excluding friction) is constant, so just pick any time and compute it}\\ \text{we'll pick a time prior to the collision}\\ p = (5~kg)(25~m/s)\hat{i} + (1~kg)(0~m/s) = 125\hat{i}~\dfrac{kg \cdot m}{s}\)

Rom Feb 21, 2019
edited by Rom  Feb 21, 2019
edited by Rom  Feb 21, 2019
 #2
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Thanks!

 Feb 21, 2019

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