A 5000 kg lorry gradually accelerates from rest. There is a box of mass 200 kg on the back of the lorry. The box is not tied to the lorry. The lorry accelerates from rest to a speed of 15 m/s over a certain distance. The maximum frictional force between the lorry and the box is 630 N. The maximum acceleration (in m/s^2) that the lorry can have without the box falling off is: O 3.15 O 15 O 0.126 O 10

A 5000 kg lorry gradually accelerates from rest. There is a box of mass 200 kg on the back of the lorry. The box is not tied to the lorry. The lorry accelerates from rest to a speed of 15 m/s over a certain distance. The maximum frictional force between the lorry and the box is 630 N. The maximum acceleration (in m/s^2) that the lorry can have without the box falling off is: O 3.15 O 15 O 0.126 O 10