### Angular speed of race car, tangential speed, loop-the-loop

1. A race car makes two and a half laps around a circular track in 3 mins. What is the car's average angular speed? Answer: - 0.087 rad/s 2. A wheel of radius 1.5m rotates at a uniform speed. If a point on a rim of the wheel has a centripetal acceleration of 1.2m/s^2, what is the point's tangential speed? Answer: - 1.3m/s