Question

or aw-Hill Conn Molecular Polarity Exam สา 1 DAT Bo D 2007DATGenerale. The brakes are applied to a moving car, causing it to uniformly sow dosn, while sisi g (a) What was its initial speed (in m/s), just before the brakes were applied? mo es·distanceof 40 o m n eos so nnai veloch a 1 so ms, at which p t then a " me l ms (b) What was its acceleration (in m/s2) while the brakes were applied? (Assume the initial direction of motion is the postive direction, Indicate the direction with the sign of your answer.) 123 A car traveling at a constant soeed of 23 5 m/s passes a trooper hidden behind a bilboard. speedino cari Soive this problem by a graphical methoo On the same oraph, cie peosition versus tine tor the car and thetroe One seoond after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.60 m/s2 How long dces it taike the tro x (n) 700 300 300 trooper r (s) 1o 300 200 150 l0D 50 From the intersection of the two curves, read the time at which the trooper overtakes the car

Answer 1

as per HOMEWORKLIB RULES i can answer only one question