TS EAMCET Medical 2018 May 3 Shift 1Paper

A truck of mass 2000 kg is moving down the hill inclined at an angle 30° relative to the horizontal. At some point when the truck speed is 72 kmph the driver applies the brakes. The constant force (parallel to the road) that must act if the truck hasto stop after travelling 100 m is
(Assume g = 10 m/s2)