Answer to Question #47855 in MatLAB | Mathematica | MathCAD | Maple for shiela

Question

A truck moving at 5 m/s is about to accelarate at the rate of 2 m/s in 3s.after 3s the driver saw a old lady about to cross the road and it took 0.8 sec before it hits the brake. If the maximum braking deceleration is 5m/s2 and its distance of the truck to the old lady is 50m. Does the old lady hit by the truck?