Question

001 10.0 points A car accelerates uniformly from rest and reaches a speed of 15.6 m/s in 4.5 s. The diameter of a tire is 35.6 cm. Find the number of revolutions the tire makes during this motion, assuming no slip- ping. Answer in units of rev. 002 10.0 points A figure skater begins spinning counterclock- wise at an angular speed of 4.2 π rad/s. Dur- ing a 4.6 s interval, she slowly pulls her arms inward and finally spins at 8.8 T rad/s. What is her average angular acceleration during this time interval? Answer in units of rad/s2 003 10.0 points Earth orbits the sun once every 365.25 days. Find the average angular speed of Earth about the sun. Answer in units of rad/s.
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Answer #1

1) 15.6m/s = 0+a(45s) 2 3S.jw = 1***************************************************************************************************
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