A car is moving on a circular track with a constant speed. If its radius is doubled, what happens to its centripetal acceleration?
Q1. A car is moving on a circular track with a constant speed. If its radius is doubled, what happens to its centripetal acceleration?
Answer: It is halved
Explanation: Centripetal acceleration (a_c) is given by v²/r. If r is doubled, a_c becomes v²/(2r), so it is halved.