Question

I GIVE MEDALS.
A cyclist rides in a circle with speed 3.2 m/s. What is his centripetal acceleration if the circle has a radius of 12 m?

A. 1.4 m/s^2
B. 0.85 m/s^2
C. 0.27 m/s^2
D. 3.8 m/s^2

Answer 1

\[a = \frac{v^2}{r} = \frac{(3.2 \text{ ms}^{-1})^2}{12\text{ m}}\]

Answer 2

I got 0.27 (c)
is that correct? @broken_symmetry

Answer 3

That's just \(\frac{3.2}{12}\).
You didn't square the speed.

Answer 4

so it would be .85? @broken_symmetry

Answer 5

Yep