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.

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.