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22-10-2019
Physics

contestada

A merry-go-round rotates with a centripetal acceleration of 15 m/s2. If the
outer horses are 7 m from the center of the ride, what is their velocity?
O
A. 11.8 m/s
O
B. 10.2 m/s
O
O
C. 9.6 m/s
D. 8.4 m/s

Respuesta :

MathPhys MathPhys

22-10-2019

Answer:

B. 10.2 m/s

Explanation:

Centripetal acceleration is:

a = v² / r

Given a = 15 m/s² and r = 7 m:

15 m/s² = v² / (7 m)

v = 10.2 m/s

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