Question
A car mass 600kg moving a speed 20m/s.it collides with a stationary car mass 900kg.if the first car bounce back 4m/s.what speed does the second object after collision
Answers
conserve momentum
600*20 + 900*0 = 600(-4) + 900v
600*20 + 900*0 = 600(-4) + 900v
Increase grade
Good
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