SOLUTION: Particle A of mass 2.0kg is moving at 15m/s to the east. Particle B of mass 3.0kg is moving to the west at 10.0m/s. Find the velocity of the center of the mass of the two particles

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Question 1185680: Particle A of mass 2.0kg is moving at 15m/s to the east. Particle B of mass 3.0kg is moving to the west at 10.0m/s. Find the velocity of the center of the mass of the two particles. Show your solution
Answer by ikleyn(52847)   (Show Source): You can put this solution on YOUR website!
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Particle A of mass 2.0kg is moving at 15m/s to the east. Particle B of mass 3.0kg is moving to the west at 10.0m/s.
Find the velocity of the center of the mass of the two particles. Show your solution
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Consider number line west-east and place the origin at the starting point.


In time t, particle A has the coordinate 15t meters, moving east.


In time t, particle B has the coordinate -10t meters, moving west.


The center of mass has the coordinate   =  = 0.


We see that the center of mass has the constant coordinate 0 (meters), so the center of coordinate is not moving: it is at rest.


ANSWER.  The velocity of the center of masses is 0 (zero, ZERO).

Solved.



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