1. The problem statement, all variables and given/known data You are standing on side of road and ambulance drives by. Smallest distance between you and ambulance is 4m. Ambulance v=10m/s^2. You have 2.2 GHz radar. Ambulance travels 100m with center of straight line directly across from you. Compute exact doppler shift by taking derivative of range vs time equation. Give ambulance acceleration 2. Relevant equations R'=|V_T|cos(theta) f_d=-2R'/lambda 3. The attempt at a solution R^2=x^2+y^2 (x and y axes, x axis defined as direction ambulance is driving) implicitly derive 2RR'=2xdx/dt+2ydy/dt y=4 2RR'=2xdx/dt+8dy/dt dy/dt=0 2RR'=2xdx/dt dx/dt=10 2RR'=20x R'=10x/R Now what?