posted by Chan on .
Hi!Need help please.
Question:A car initially traveling at 24.0 m/s undergoes a constant negative acceleration of magnitude 2.10 m/s2 after its brakes are applied.
(a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m?
(b) What is the angular speed of the wheels when the car has traveled half the total distance?
You know the velocity intial, the final veloctiy, and are looking for distance
Vf^2=vi^2 + 2ad
solve for d.
Then convert that to revolutions.
the average angular velocity is average velocity/circumference