Question

a 1.9kg ball of putty moving to the right has a head -on inelastic with 1.3 kg putty ball moving to the left , if the combined blob doens;t move just after the collision, what can you conclude about the relative speeds of the balls before they collide?
bobpursley
The relatave speeds of the balls are inversely prop to the mass ratios:

ball going to right has 1.3/1.9 of the speed going to the left.
1.9

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