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A boy is pushing a box on horizontal flo...

A boy is pushing a box on horizontal floor from a position of rest to rest , while moving along a straight line. Consider the three phases of motion. The floor is rough with a small friction coefficient .
(i) Initially a constant hard push on the box to get it moving and attain a maximum velocity .
(ii) Mild push to keep the box moving with constant velocity
(iii) To pull back the box the to bring it to stop with the same retardation.
Which of the following graph is CORRECT ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
(C) Direction of friction does not change
(D) Friction is constant
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