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A sprinter enters a curve (radius of 21m) with a speed of 7.20m/s. Over a 3s...

A sprinter enters a curve (radius of 21m) with a speed of 7.20m/s. Over a 3s period, the sprinters speed decreases to 6.00m/s. Determine the magnitude of the sprinters radial, and tangential acceleration as he leaves the curve?

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Answer #1

The tangential acceleration is the rate at which the speed of the sprinter decreases in circular motion. The speed decreases from vi=7.20m/s to vf=6.00m/s in time t=3s. The tangential acceleration of the sprinter is

The radial acceleration is equal to the centripetal acceleration. The speed of the sprinter as he leaves the curve is vf=6.00m/s, the centripetal acceleration of the sprinter as he leaves the curve is

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