1. The problem statement, all variables and given/known data A car, travelling at a constant speed of 30m/s along a straight road, passes a police car parked at the side of the road. At the instant the speeding car passes the police car, the police car starts to accelerate in the same direction as the speeding car. What is the speed of the police car at the instant is overtakes the other car? Given: v=30m/s vi=0 Need: vf=? 2. Relevant equations vf=vi+αΔt vf2=vi2+2αΔd v=Δd/Δt 3. The attempt at a solution So far, I really have not gotten anywhere. I believe what I have to do is somehow manipulate the velocity equation of the first car into something I can input into the vf equation for the police car. I have been having much trouble with this question and would appreciate any tips to point me in the right direction.