As you drive down the road at 18 m/s, you press on the gas pedal and speed up with a uniform acceleration of 1.07 m/s2 for 0.60 s.   If the tires on your car have a radius of 33 cm, what is their angular displacement during this period of acceleration?

A “blink of an eye” is a time interval of about 150 ms for an average adult. The “closure” portion of the blink takes only about 55 ms. Let us model the closure of the upper eyelid as uniform angular acceleration through an angular displacement of 14.0°. What is the tangential acceleration of the edge of the eyelid while closing if the radius of the eyeball is 1.25 cm?

The crankshaft in a race car goes from rest to 3000 rpm in 2.0 seconds. How many revolutions does it make while reaching 3000 rpm?

Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person wearing a g- suit can withstand accelerations up to about 9g (88.2 m/s2) without losing consciousness. HINT (a) If a human centrifuge has a radius of 5.17 m, what angular speed (in rad/s) results in a centripetal acceleration of 9g? X rad/s (b) What linear speed (in m/s) would a person in the centrifuge have at this acceleration? m/s

Starting from rest, a wheel with a radius of 0.55 m begins to roll across the ground in a straight line under a constant angular acceleration of 4.05 rad/s2. What is the speed of the wheel in m/s after it has rotated through 17 full revolutions

A child sits on a merry-go-round that has a diameter of 4.00 m. The child uses her legs to push the merry-go-round, making it go from rest to an angular speed of 17.0 rpm in a time of 43.0 s. What is the average angular acceleration aavg of the merry-go-round in units of radians per second squared (rad/s?)? davg = rad/s2 What is the angular displacement Að of the merry-go-round, in units of radians (rad), during the time the child pushes the merry-go-round? A0 = rad about us careers privacy policy terms of use contact us help tv MacBook Air II F8 F10 D00 000 CA F9 F7

The tires of a car make 85.0. revolutions as the car reduces its speed uniformly from 90.0 km/hr to 60.0 km/hr. The tires have a diameter of 0.90 m. What is the angular acceleration? If the car continues to slow down at this rate, how much more time is required to stop?

A 3.45-kg centrifuge takes 99 s to spin up from rest to its final angular speed with constant angular acceleration. A point located 6.9 cm from the axis of rotation of the centrifuge moves with a speed of 178.2 m/s when the centrifuge is at full speed. What is the angular acceleration (in rad/s2) of the centrifuge as it spins up?

An airplane engine starts from rest; and 2 seconds later, it is rotating with an angular speed of 420 rev/min. If the angular acceleration is constant, how many revolutions does the propeller undergo during this time?

Some bacteria are propelled by motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.1 x10-8m, and a tangential speed at the rim of 2.4 x10-5 m/s.  How long does it take the motor to make one revolution?