Question

A squirrel, a train, a bird, and a car are all traveling at the same velocity. Which object has the greatest amount of kinetic energy?

Answer 1

Explanation:

Kinetic energy is the energy acquired due to the motion of an object.

Mathematically,         kinetic energy = $\frac{1}{2}mv^{2}$

where                 m = mass

                           v = velocity

Therefore, kinetic energy depends on the mass and square of velocity. Hence, more is the mass of an object more will be its velocity.

Thus, we can conclude that out of the given options, train will have more mass as compared to other objects, therefore, train will have highest kinetic energy.

Answer 2

The greatest amount of kinetic energy is found with the train because it takes most energy to reach that velocity and also to slow down to a halt.