An object initially rotating at an angular speed of 1.6 rad/sec turns through 30 revolutions during the time it experienced an angular acceleration of 0.32 rad/s^2

Question

a) For how much time did the acceleration last?
b) What was the final angular speed?

Help please. Use the equation and then step by step and plug the numbers into that equation

Answer 1

Here is the equaton
displcaement=wi*t+1/2*alpha*t^2

displacement=30*2PI rad
wi=1.6 rad/sec
alpha=.32 rad/s^2
solve for time

wf=wi +alpha*t
wf = final angular speed in rad/sec

Answer 2

I still don't get it. Can you explain more and do the problem step by step to get the answer