Could an elephant have the same momentum as a golf ball

Yes

Explanation:

The momentum of an object is given by

where

m is the mass of the object

v is its velocity

In this problem we are comparing an elephant with a golf ball. We know that the mass of the elephant is much larger than the mass of the golf ball:

Since we want the two momenta to be equal

We find

So, this means that the velocity of the ball must be much larger than the velocity of the elephant.

measure their densities same density, same sub