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practice examMultiple Choice

Practice Exam

Question 1 • Physics

Which formula can be used to find the centripetal acceleration of an orbiting object?

Answer
A
A sub c is equal to the fraction with numerator v squared and denominator cap t
B
A sub c is equal to the fraction with numerator square root of v and denominator cap t
C
A sub c is equal to the fraction with numerator v squared and denominator r
D
A sub c is equal to the fraction with numerator square root of v and denominator r

Explanation

Centripetal acceleration is found using the object's speed squared divided by the radius of its circular path: a₍c₎ = v²/r. Therefore, choice B, “v squared divided by r,” is correct. The time t does not replace the radius in this formula.

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