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प्रश्न
Two toy-cars A and B of masses 500 g and 200 g respectively are moving with the same speed. Which of the two has the greater kinetic energy?
उत्तर
The toy car ‘A’ of mass ‘500 gm’ has the greater kinetic energy. This can be explained as :
K.E. = 1 / 2 Mv2
Here, both the cars are moving with same speed. So the car with greater mass will possess greater kinetic energy.
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