# Rotational Vs. translational kinematics

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###### Lessons

- A centrifuge starts from rest and has an angular acceleration of 150 rad/s
^{2}for 2.5s. - A car engine slows down from 4200rpm to 600rpm in 2.0s.
- A high-speed jet takes 1.5 min to turn through 20 complete revolutions before reaching its final speed.
- To move a large pottery wheel with a radius of 22.0cm, a small rubber wheel is used. Wheels are mounted and their circular edges are in contact. The radius of the small wheel is 3.0cm and it accelerates at the rate of 6.4 rad/s
^{2}without slipping. - A car reduces its speed uniformly from 86km/h to 44 km/h, during this time the wheels of the car with a diameter of 0.60m, make 66 revolutions.