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Practice question

MCQ

Question

A car decelerates uniformly from 25m/s to rest over a distance of 62.5m. What is the deceleration?

Options

Choose one · Correct answer highlighted

Explanation

Use v2=v02+2ax. Here, v=0, v0=25m/s, x=62.5m. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 62.5 m as the result, so option A is correct.

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