A car is travelling at the rate of 20m/s. 55m ahead the driver sees a pedestrian and he pulls the brake after 1.75s. The braking rate is 4m/s2. Calculate the stopping distance and explain what
happens to the pedestrian.
Please answer it as fast as u can. i will mark u brailiest.

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.