Question

Suppose a fly and an eagle have the same kinetic energy. How could this be true?

Answer 1

Answer:

The fly must be moving at a greater speed than the eagle

Explanation:

The kinetic energy of an object is given by

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

where

m is the mass of the object

v is its speed

In this problem, we have a fly and an eagle, and they both have same kinetic energy. We also know that the eagle has a much larger mass m than the fly: therefore, since the kinetic energy depends only on m and v, in order for the two animals to have same K, it means that the fly must have a much larger speed v than the eagle.