Answer: 10kg
Explanation:
force applied by Ahmad = 100 N
box's acceleration = 10 m/s
mass of the box = ?
Recall that Force is the product of mass of an object by the acceleration by which it moves.
i.e Force = mass x acceleration
100N = mass x 10m/s
Mass = 100N / 10m/s
Mass = 10kg
Thus, the mass of the box is 10kg