Practice question
Question
A car accelerates uniformly from rest at 4m/s2 for 5s. What is the final velocity?
Explanation
Use the equation v=v0+at. 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 20 m/s as the result, so option A is correct.
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