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A biker pedals hard for 3 seconds. What is his initial velocity if he accelerated by 4m/s2 until he's going 20m/s. (Which equation should I use?)
![A Biker Pedals Hard For 3 Seconds What Is His Initial Velocity If He Accelerated By 4ms2 Until Hes Going 20ms Which Equation Should I Use class=](https://us-static.z-dn.net/files/d68/bc06e1733708288ef2caeda8f7cd872d.png)