Question

A particle is moving in a circle of radius 2 m with a constant speed of 4 m/s. What is the centripetal acceleration?

• A. 2 m/s\textsuperscript{2}
• B. 4 m/s\textsuperscript{2}
• C. 8 m/s\textsuperscript{2}
• D. 16 m/s\textsuperscript{2}

Hint:

In uniform circular motion, even with constant speed, acceleration exists due to the continuous change in direction. Always use \( a = \frac{v^2}{r} \) for centripetal acceleration.