Question

The rear side of a truck is open and a box of mass 20 kg is placed on the truck 4 m away from the open end. If m is 0.15 and g is 10 ms^-2 and the truck starts from rest with an acceleration of 2 ms^-2 on a straight road, then the box will fall off the truck when it is at a distance of x metre from the starting point. The value of x is

(a) 4 m

(b) 8 m

(c) 16 m

(d) 32 m

Answer 1

Correct option (c) 16 m

Explanation :

After 4 s, the box will fall off the truck. During 4 s, the truck travels,