Asked by Harold
If you have two objects, one four times heavier then the other, both at rest on a frictionless surface, and a person pushes against them for a distance of 5 meters. Assuming the force applied on both objects are equal, the kinetic enrgy of the light object is?
I say one-quarter of the heavier car
I say one-quarter of the heavier car
Answers
Answered by
drwls
They will have the same KE (if pushed separately), since the same amount of work will have been done on each.
If one has 1/4 of the mass, the V^2 of the lighter object will be 4 times higher. That means its speed will be twice the other.
If one has 1/4 of the mass, the V^2 of the lighter object will be 4 times higher. That means its speed will be twice the other.
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