[单选题]
A Ferris wheel rotating at 20 rad/q-zu1rrrui bux4jlf0 1 vy./7 s deceleratwt) )vczswu y 94n.j40gtqv/ses with a constant angular acceleration.q4st 9wvgu) 0/yvj 4ztns)cw of $-5.0 \; rad/s^2$. How many revolutions does it rotate before coming to rest?
