Question

Hellohellp fastttttttttt

Answer 1

Step-by-step explanation:

`w_f^2=w_o^2-2\alpha\theta\\\\0=w_o^2-2\alpha\theta\\\\\theta={w_o^2\over{2\alpha}}`

`w_o=2\pif=2\pi*8Hz=16\pi{rad\over{s}}\\\\\alpha=2.2{rad\over{s^2}}\\\\\theta={(16\pi{rad\over{s}})^2\over{2*2.2{rad\over{s^2}}}}=574.23rad`

`revolutions={\theta\over{2\pi}}={574.23\over{2\pi}}=91.39`