Answer:
[tex]\huge\boxed{\sf F = 0.28\ N}[/tex]
Explanation:
Mass = m = 68 kg
Velocity = v = 30 m/s
Time = 2 hours = 2 × 60 × 60 = 7200 s
Force = F = ?
[tex]\displaystyle F = \frac{mv}{t}[/tex]
[tex]\displaystyle F = \frac{(68)(30)}{7200} \\\\F = \frac{2040}{7200} \\\\F = 0.28 N\\\\\rule[225]{225}{2}[/tex]