1. The problem statement, all variables and given/known data A student at a window on the second floor of a dorm sees his physics professor coming along the walkway beside the building. He drops a water balloon from 18.0 m above the ground when the prof is 1.00 m from the point directly beneath the window. If the prof is 180 cm tall and walks at a rate of 0.450 m/s, does the balloon hit his head? 3. The attempt at a solution Yo = 0 y = -18.0 m + 1.8 m = -16.2 m g = -9.81 m/s^2 Vo = 0 X = 1.00 m Vxo = 0.450 m/s Balloon Drop: y = yo + Vo*t - 1/2*g*t^2 -16.2 m = 0 + 0 - 1/2(9.81 m/s^2)t^2 t^2 = 16.2 m/4.9 m/s^2 t^2 = 3.31 s^2 therefore, t = sqrt3.31 s^2 = 1.82 s Professor Walk: x = Vxo*t 1.00 m = (0.450 m/s)t t = 1.00 m/(0.450 m/s) =2.22 s Therefore, the balloon drops before the professor gets there. Can anybody please tell me if my attempt is o.k.?