Question

A truck and a car are running with same velocity. Which of the two has less kinetic energy.

Answer 1

car will have less kinetic energy as mass of truck is more than that of the car and kinetic energy is directly proportional to the mass of the body...

Answer 2

The kinetic energy of the car is less than that of truck.

Explanation:

The kinetic energy of an object is given in terms of mass and its velocity as :

$K=\dfrac{1}{2}mv^2$

m is mass and v is velocity

It is mentioned that a truck and a car are running with same velocity. It is clear that the kinetic energy is proportional to the mass of an object. It is obvious that the mass of truck is more than that of car.

So, the kinetic energy of the car is less than that of truck.

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Kinetic energy

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