20. A tricycle wheel of radius 0.11 m is at rest and is then accelerated at a rate of 2.3 rad/s2for a period of 8.6 s. What is the wheel’s final angular velocity? w = wo + at -> w = 0 + 2.3 ( 8.6) = 19.78 -> 20 rads/s

Use the ratio form of kepler’s third law, = , and the data provided to determine the time it takes mars to orbit the sun. round your answer to the nearest tenth. earth’s orbital period = 1.0 earth year earth’s distance from the sun = 1.0 au mars’s distance from the sun = 1.5 au it takes mars about ⇒ 1.8 earth years to orbit the sun.