The car moves along the curve of the road with a radius of 100 m at a speed of 54 km / h. What is the magnitude

The car moves along the curve of the road with a radius of 100 m at a speed of 54 km / h. What is the magnitude of the centripetal acceleration of the car?

Given: v = 54 km / h, r = 100m
Find: a
Solution: 1) first, let’s translate km / h into m / s: 54 • 1000m: 3600s = 15 m / s (since 1 km = 1000m, and 1h = 3600s
2) we find a by the formula: a = v ^ 2: r, a = 15 ^ 2: 100 = 2.25 m / s ^ 2
Answer: 2.25 m / s ^ 2