Question

Two toy-cars A and B of masses 200g and 500g respectively are moving with the same speed.Which of the two has greater kinetic energy?Justify

Answer 1

Answer:

Car B has high kinetic energy

Explanation:

Kinetic energy = $\frac{1}{2}$ m$v^{2}$

we can see that the kinetic energy is directly proportional to the mass and velocity of the object,

here in this case as the speeds are same we can exclude the speed factor,

as the mass is more / higher in the case of B

thus,

we can conclude that the car B has higher kinetic energy

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