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A 700 kg race car makes one lap around a track. It has a velocity of 20 m/s with a centripetal force of 5,600 n. What is the radius of the track?.

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Answer:

50m

Explanation:

Centripetal force = mv² ÷ r

F= 5600N, m= 700Kg, v= 20m/s, r=?

5600 = 700 × 20² ÷ r

r = (700 × 400)/ 5600

= (700 × 4)/56

= 700/14

= 100/2

r = 50

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