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The rear side of a truck is open and a box of mass 40kg is placed 5m away from the open end. The coefficient of friction between the box and the surface below it is 0.15. The truck starts from rest with an acceleration of `2ms^(-2)` on a straight road. At what distance from the starting points does not the box fall off the truck?

A

20m

B

10m

C

`sqrt(20) m`

D

`5m`

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The correct Answer is:
A
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