Hello, i'm stuck on this problem and I think its because I am lacking the calculus to get the correct answer. A shaft is turning at 65 rad/s at time = 0. After, its angular acceleration is given by: a= -10.0 rad/s^2 - 5.00t rad/s^3 where t is the elapsed time. Find its angular speed at 3 seconds. Now where I am stuck is I can find its acceleration at 3 seconds, but I believe I need to take the deritive of something in order to calculate the small sections of a/t. Am I on the right track? Any good links to explain how to take the deriitive of a angular acceleration? Thanks!