1. The problem statement, all variables and given/known data A compact disc speeds from rest to 5200 rpms in 620 rad. Diameter is 5.0cm -how many revolutions did it make in this time -what is the angular acceleration in rad/s^2 -how long does ti take to reach this speed 2. Relevant equations 3. The attempt at a solution i was able to find the first part by 620(180/π) = 35523 dividing that by 360 and getting 99 revolutions for the last 2, i am completely lost to where i even begin solving them. thank you..