Question

a box of mass 400 kg rests on a carrier of truck that is moving at a speed of 120km/h the driver applies brake and slow to a speed of 60km/h . the constant acceleration generated upon the box in m/ s

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Answer 1

Explanation:

Dear student,

v=u+athere v=60km/hr =16.67m/su = 120km/hr = 33.33m/st = 20 sec16.67 = 33.33 +a×20−16.66 =20aa=−16.6620=−0.83m/s2This the constant deceleration

This is constant deceleration of the truck.

For the box it will be 0.83m/s2