NEET UG PHYSICS MCQ: MOTION IN A STRAIGHT LINE

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Two cars A and B are travelling in the same direction with velocities

{v_1}\mathrm{\;and\;\;}{v_2}\left( {{v_1} > {v_2}} \right).

. When the car A is at a distance d behind the car B, the driver of the car A applies the brake producing uniform retardation, a. There will be no collision when

View answer and explanation

Correct option: C

d > \frac{{{{\left( {{v_1} - {v_2}} \right)}^2}}}{{2a}}

Option C (

d > \frac{{{{\left( {{v_1} - {v_2}} \right)}^2}}}{{2a}}

) is correct because it represents the condition where the relative velocity is reduced to zero before the cars collide.

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