A wooden bench consists of a plank that weighs 80N resting on two brick pillars. The bench is 2.5m long and the pillars that support it are 0.5m from each end. The brick pillars provide upward forces F1 and F2. What'll the sizes of these two forces be when no one is sitting on the bench?

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.