A car is traveling with a speed of 25 m/s along a straight, horizontal road. Each wheel has a radius of .25 m. If the car speeds up with a linear acceleration of 2.0 m/s^2 for 6.0 s. Find the angular displacement of each wheel during this time in revolutions.

Answer 1

Car's displacement= S = ut + at^2/2
= 25*6 + 2*6^2/2
= 150 + 36 = 186m
One rev. of wheel covers = 2*pi*r
No. of revolutions = 186/(2*pi*0.25)
= 118.4 rev.

Answer 2

A school bus takes 0:53 hours to reach the schoool from your house. If the average speed of the bus is 19km/h, what is the displacement of the bus during the trip?