February 19, 2017

Homework Help: physics help

Posted by john on Friday, November 19, 2010 at 3:59pm.

The earth orbits the sun once a year (3.16 10^7 s) in a nearly circular orbit radius 1.50 10^11 m. With respect to the sun, determine the following.
(a) the angular speed of the earth
1 rad/s

(b) the tangential speed of the earth
2 m/s

(c) the magnitude and direction of the earth's centripetal acceleration
i got a and b but not c please help

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