alleryStart learning →A car follows a curve of radius 500 m at a speed of 25.0 m/s. What is the magnitude of its centripetal acceleration?
A0.05 m/s^2
B1.25 m/s^2
C12.5 m/s^2
D20.0 m/s^2
Answer & Solution
Correct answer: B. 1.25 m/s^2
1. Use a_c = v^2 / r.
2. a_c = (25.0 m/s)^2 / 500 m = 625 / 500.
3. a_c = 1.25 m/s^2.
_Source: OpenStax Physics (CC BY 4.0), Ch 6 "Circular and Rotational Motion", section 6.2 Uniform Circular Motion_
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