Posted by JosÃ© on Thursday, March 22, 2012 at 12:24am.
A car starts from rest and accelerates uniformly to a speed of 50km/h in 18s. If the wheels of the car are 70cm in diameter. Calculate;
a.The final angular velocity of the wheels
b.angular acceleration

Physics  drwls, Thursday, March 22, 2012 at 3:19am
Vfinal = 50 km/h = 13.889 m/s
a = acceleration rate = 13.889/18
= 0.7716 m/s^2
a) Final W = Vfinal/R = 39.68 rad/s
b) Angular acceleration = a/R
= ___ rad/s^2