The skater moves in a circle with a radius of 30 m with an acceleration of 4.8 m, s. Determine the speed of the skater.
| December 13, 2020 | education
The centripetal acceleration acting on the skater is equal to the speed in the square divided by the radius of the circle along which he moves. Hence the speed is equal to the root of the product of acceleration and the radius of the circle.
v = √ (a * r) = √ (4.8 * 30) = √ (144) = 12 m / s.
Answer: 12 m / s.
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