Hi I\'m studyng for my test, but i can\'t solve this problem:-( You are driving

Question

Hi I'm studyng for my test, but i can't solve this problem:-( You are driving home from school steadily at 95 km/h for 130km. It then begins to rain and you slow to 65 km/h. You arrivehome after driving 3 hrs and 20 min. a) How far is your hometown from school? b) What was your average speed? Hi I'm studyng for my test, but i can't solve this problem:-( You are driving home from school steadily at 95 km/h for 130km. It then begins to rain and you slow to 65 km/h. You arrivehome after driving 3 hrs and 20 min. a) How far is your hometown from school? b) What was your average speed?

Explanation / Answer

(a)    in the first part the time taken to travel130 km with speed 95 km / h is    t1 = 130 x 103 m /[95(5 / 18) m / s]      = ...... s      = ...... min    the total time is T = 3 hr 20 min    the time in the second trip is    t2 = T - t1    find the distance in the second trip withspeed 65 (5 / 18) m / s    so the total distance 130 km + secondtrip (b)    average speed will be = total distance /total time    find the distance in the second trip withspeed 65 (5 / 18) m / s    so the total distance 130 km + secondtrip (b)    average speed will be = total distance /total time

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