Your 64-cm-diameter car tire is rotating at 3.3 rev/swhen suddenly you press down hard on the accelerator. after traveling 250 m, the tire's rotation has increased to 6.4 rev/s. what was the tire's angular acceleration? give your answer in rad/s^2.

Explanation:

The given data is as follows.

   Initial velocity, u =

                           = 20.724 rad/sec

   Final velocity, v =    

                           = 40.192 rad/sec

Now, we will calculate the value of angular rotation (d) as follows.

          d = No. of revolutions ×

         d =

            =

            = 781.25 rad

Also, we know that,

or,              a =

                      =

                      =

                     = 0.7589

Thus, we can conclude that the tire's angular acceleration is 0.7589 .

answer; ///i believe that the correct answer is (45*) at a 45 degree check first good