Practice question
Question
In uniform circular motion, what happens to the object’s motion if its speed doubles while the radius remains constant?
Explanation
Velocity v=v₀+at. Starting from rest, v=at. With a=(ax i+ay j), magnitude |v|=t√(ax²+ay²) per NCERT vector addition. Substituting ax, ay, t gives |v| equal to Centripetal acceleration increases fourfold. Hence option D is correct.
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