Question

Using the following picture, who has a higher kinetic energy, the woman or the rabbit? How do you know?

Answer 1

We will have the following:

We determine both kinetic energies:

*Person:

$k_p=\frac{1}{2}(60kg)(5m/s)^2\Rightarrow k_p=750J$

*Rabbit:

$k_r=\frac{1}{2}(4kg)(5m/s)^2\Rightarrow k_r=50J$

So, the person has a greater kinetic energy than the rabbit. And we know it by running the calculations and seeing that the values of energy are greater for the person.