Question

A car starts from rest and accelerates uniformly
by for 4 seconds and then moves with uniform
velocity which of the x-t graph represent the motion
of the car ?​

Answer 1

Explanation:

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Answer 2

since car starts from rest and has acceleration,say a

x is directly proportional to t square.So graph during 4 second is parabola with slope increase with time.

after 4 sec. velocity is uniform which means that x-t graph should be linear with positive slope so graph is