An empty coal car (mass mc=22,000.kg) of a train coasts along at 8.0ms. An elephant, me=2500.kg...
An empty coal car (mass mc=22,000.kg) of a train coasts along at 8.0ms. An elephant, me=2500.kg falls from a bridge and drops vertically into the car. Determine the speed of the car immediately after the elephant falls.
Hint: mc⋅vc=(mc+me)⋅vc,f→
vc,f=mc⋅vCmc+me
A) 8.7ms;
B) 7.2ms;
C) 18.0ms;
D) 1,456.7ms;
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