James and Clare are riding their bicycles. They are riding at the same speed, but the tires on Clare’s bicycle are larger in diameter. Which wheels have the greater rotational (angular) speed? Why?

The angular velocity of a wheel increases from 100 to 30 10 s. The number of revolutions made during that time is (а) 600 (c) 1000 (b) 1500 (d) 2000

Your roommate is working on his bicycle and has the bike upside down. He spins the 56.0 cmcm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. What is the pebble's acceleration? Express your answer with the appropriate units.   The answer is NOT 110 49.7 49.8 or 0.63

A rock tied to the end of string swings at a constant angular rate. If you are told that the string can support a total of 85 N of force before breaking, what is the maximum angular velocity the rock can rotate if the rock has a mass of 0.16 kg, and the length of the string is 0.5 m? Give your answer in units of radian per second

Question 13 An ice skater starts to spin with an angular velocity of 2 rotations per second, when she moves her arms close together her angular inertia goes down by a factor of 5, how fast would she rotate then? O 2/5 rotations per second O 5 rotations per second O 5/2 rotations per second O 10 rotations per second Question 14 What is the tangential velocity of a ladybug that is 20 cm from the center of a turntable rotating at 5 radians per second? Hint: Watch the units O 4 m/s O 1 m/s O 100 m/s O 0.04 m/s Question 15 What is the magnitude of the centripetal force keeping the ladybug of the above problem in circular motion? Use 2x10-5 kg for her mass. Hint: Watch the units O 1x104 N O 1x107 N 2x10 3 N O 1x105 N

The tires of a car make 85 revolutions as the car reduces its speed uniformly from 87.0 km/hkm/h to 58.0 km/hkm/h. The tires have a diameter of 0.82 mm. What was the angular acceleration of the tires? If the car continues to decelerate at this rate, how much more time is required for it to stop? If the car continues to decelerate at this rate, how far does it go? Find the total distance.