# The graph below shows the angular position vs. time of a small piece of clay on a potter’s wheel.?

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- billrussell42Lv 72 months ago
angular acceleration α in rad/s²

ω = Δθ/Δt = (75–25) rad / 10s = 5 rad/s

but ω is constant, so α is zero

but from the answers, you want something else... with units of m/s²

perhaps:

linear tangental acceleration, αt

α = αt/r

at = rα

since α = 0, linear tangental acceleration is zero.

or, do you mean centripetal acceleration ?

Centripetal acceleration is

a = Vdθ/dt = ω²r = Vω = V²/r

a = ω²r = 5²0.14 = 3.5 m/s²

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