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Unformatted text preview: An object traveling in a circle at constant speed Select One of the Following: (a) is moving with constant velocity. (bAnswer) has an angular acceleration of zero. (c) has a tangential acceleration that is nonzero. (d) has a centripetal acceleration that is zero. Solution ω av = Δ ϑ Δ t = v av R is the average rotational velocity, which is equal to the rotational displacement ( Δ ϑ ) divided by the time interval Δ t over which the displacement occurs, and is a constant, one complete revolution per minute. Angular acceleration will be zero, since angular velocity is constant. There is no acceleration tangential to the circular path, so the tangential acceleration is zero. We have uniform circular motion, so there has to be an acceleration toward the middle, or we wouldn’t be going in a circle, so a c cannot be zero. 2 Total Points for Problem: 2 Points 3...
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 Spring '08
 Stewart
 Physics, Acceleration, Circular Motion, Work, Velocity, Physical quantities, tangential acceleration

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