1. The problem statement, all variables and given/known data A bus goes from the bus stop with the acceleration 0.75 m/s^2. A girl runs after the bus. She has the speed 8.0 m/s, and she was 17.5 m behind the bus as it started. a) How long time does it take the girl to catch up with the bus? 2. Relevant equations THe equations for constant acceleration [itex]v=v_0 +at[/itex] and [itex]s=v_0 t + \frac 12 at^2[/itex] 3. The attempt at a solution I only came as far as to figure out which variables I have for each object: BUS: [itex]v_0=0 m/s[/itex]since the bus has no speed at the stop, a=0.75m/s^2 GIRL: [itex]v_0=v=8.0 m/s[/itex] Velocity at start is equal to velocity later when the speed is konstant, a=0m/s^2 No acceleration when an object has constant speed. [itex]s_0=-17.5 m[/itex] Starting point 17.5 m behind the bus However I can't figure out how to use these variables and formulas to get the time it takes her to catch up with the bus.... Please help!