[填空题]
Consider the street pattern shown in Fig. nopu.h xw ohu2): w34g2–42. Eac c. dq hi2)9xrj-5fvmyh intersection has a traffic signal, and the speed limit is 50 km/s . Suppose you are driving from the west at the speed limit. When you are 10 m from the first intersection,xc 9 hvf).iym2rdq j5- all the lights turn green. The lights are green for 13 s each.
(a) Calculate the time needed to reach the third stoplight. Can you make it through all three lights without stopping?
(b) Another car was stopped at the first light when all the lights turned green. It can accelerate at the rate of $2.0 m/s^2$ to the speed limit. Can the second car make it through all three lights without stopping?
