Question

How much force is needed to stop a 100-kg football player if he decelerates at 20 m/s²?



A.
20 N


B.
2000 N


C.
200 N


D.
5 N

Answer 1

@timaashorty

Answer 2

@aaronq

Answer 3

\[F=ma\]
You know \(m\), you know \(a\)

\[1 ~kg\cdot\frac{m}{s^2} = 1~N\]

Answer 4

By the way, this really would be better posted in the Physics section...