Physics
posted by Cindy .
An automobile with 0.80m diameter wheel starts from rest and accelerates uniformly to 22 m/s in 0.7 s. Through how many revolutions does the front wheel turn during this period?

Physics 
Damon
r = .4 m
v = w r = 22
so w final = 22/.4 = 55 radians/second
alpha = 55/.7 = 78.6 radians/s^2
angle = (1/2) a t^2
= .5(78.6)(.49) = 19.25 radians
19.25/(2 pi) = 3.05 revolutions
Respond to this Question
Similar Questions

Physics
A bike wheel rotates uniformly through 2 revolutions in 3 seconds. a) what is the period of the wheel's rotation? 
Physics
A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the … 
Physics
A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the … 
Physics
A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the … 
Physics
A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5s. Through how many revolutions did the … 
Physics
A wheel with 50 cm diameter is moving at a speed of 20 m/sec. (a) How fast is the wheel turning? 
Physics
A bicyclist starts from rest and accelerates at a constant rate for 15.0s. After 10.0s the bicycles front wheel is turning at a rate of 2.5 rev/s. The tire wheel has a diameter of 0.8m. A)Through how many revolutions does the wheel … 
trigo
the front wheel of a bicycle has a diameter of 16 in and the back wheel has a diameter of 26 in. through what angles does the front wheel turn if the rear wheel turns through 24 radians? 
trigo
a bicycle has a front wheel with a diameter of 24cm and a back wheel with a diameter of 60cm. through what angle does the front wheel turn if the back wheel turns through 12 radians 
Physics
A wheel mounted on a stationary axle starts at rest and is given the following angular acceleration: 912t where t is the time after the wheel begins to rotate. Find the number of revolutions that the wheel turns before it stops ( …