Practice question
Question
A body accelerates uniformly from rest to 22m/s over a distance of 121m. What is the acceleration?
Explanation
Use v2=v02+2ax. Here, v0=0, v=22m/s, x=121m. 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 2 m/s² as the result, so option C is correct.
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