Answer:
<h2>The answer is 90 kg</h2>
Explanation:
In order to find the mass of the football we use the formula

where
p is the momentum
v is the velocity
We have

We have the final answer as
<h3>90 kg</h3>
Hope this helps you
The sun <u><em>appears</em></u> brighter than any other star.
(It isn't really, but it looks that way because it's much much much much much much closer to us than any other star.)