Question

A football player with a mass of 100 kg from runs from rest towards his opponent and hits him with a force of 500 Newtons 5 seconds later. What was his momentum before impact? ​

Answer 1

Answer:

2500kgm/s

Explanation:

Change in momentum is equal to impulse, numerically.

Ft=m( v-u)

But he begins from rest so u= 0

Then

Ft= mv

500(5)=mv

2500= mv

Answer 2

The correct answer would be 2500 Kgm