A wheel rotates about a fixed axis. Initial angular velocity of 20 rad/s. During a 5 s interval the ang. velocity increases to 40 rad/s. (const angular acceleration) How many radians does the wheel turn in 5 s? Having a bit of trouble, not quite sure why... so I start out with w = w0 + at 40 = 20 + a*5 a = 4 w^2 = w0^2 + 2*4*theta theta = 150 radians I thought that was the correct answer, however, that's not one of the choices. Anyone see what I'm doing wrong?