On a highway a car of mass 1.2×10^3kg travelling at 20m/s has kinetic energy equal to a loaded van of mass 4.8×10^3kg.What is the speed of van?
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poojan4:
thank u rahul
can u explain me
this answer
yeah its simple
we know that the formula of kinetic energy is 1/2×m×v^2
and they said that both have same kinetic energy
suggest equalise the kinetic energy of car and van
a little calculation with carefulness will give you the correct answer
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