Posted by **sarah** on Monday, November 3, 2008 at 12:27am.

a truck travels along the horizontal circular curve of radius r=60m with a constant speed v=20m/s. Determine the angular rate of rotation theta of the radial line r and the magnitude of the truck's acceleration.

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**drwls**, Monday, November 3, 2008 at 2:09am
The truck's acceeration is entirely centripetal, and the magnitude is

a = v^2/r

The angular rotation rate, in radians per second, is

w = v/r

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