How much work is done? a net force of 9.0 n acts through a distance of 3.0 m in a time of 3.0 s. the answers are 3.0 j, 9.0 j, 27 j, 81 j.

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.