A car is moving on a circular track. If its speed is 20 m/s and centripetal acceleration is 4 m/s², what is the radius of the track?
Q1. A car is moving on a circular track. If its speed is 20 m/s and centripetal acceleration is 4 m/s², what is the radius of the track?
Answer: 100 m
Explanation: Radius (r) = v² / a_c = (20)² / 4 = 100 m, using the formula a_c = v² / r.