A race car has a centripetal acceleration of 18.75 m/s2 as it goes around a curve. If the curve is a circle with radius 12 m, what is the speed of the car? A. 15 m/s B. 9.8 m/s C. 1.6 m/s D. 17.2 m/s

Question

Alexia Mercado

Physics

21 February, 00:54

A race car has a centripetal acceleration of 18.75 m/s2 as it goes around a curve. If the curve is a circle with radius 12 m, what is the speed of the car? A. 15 m/s B. 9.8 m/s C. 1.6 m/s D. 17.2 m/s

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Answers (2)

Know the Answer?

Grant Blevins · Answer 1

Option (A) is correct.

Explanation:

The centripetal acceleration is given by

a = v²/r

V = velocity

r = radius = 12 m

a = centripetal acceleration = 18.75 m/s²

18.75 = v²/12

v²=18.75 x 12

v²=225

v = 15 m/s