Practice question
Question
A particle starts with velocity 5i^m/s and accelerates at (4j^)m/s2. What is its speed after 3s?
Explanation
Velocity 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 13 m/s as the result, so option D is correct.
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