Answer:
[tex]\huge\boxed{\sf F=2709.7\ N}[/tex]
Explanation:
Velocity = v = 12.0 m/s
Mass = m = 70 kg
Time = 0.31 s
Force = F = ?
[tex]\displaystyle F=\frac{mv}{t}[/tex]
Put the given data in the above formula.
[tex]\displaystyle F = \frac{(70)(12)}{0.31} \\\\F=\frac{840}{0.31} \\\\F=2709.7 N\\\\\rule[225]{225}{2}[/tex]