You are driving home from school steadily at 95.0 km/h for 130 km. It then begins to rain and you slow to 65.0 km/h. You arrive home after driving 3.33 hours. (a) How far is your hometown from school? (b) What was your average speed?
Very simple,Its all about calculating distance using the formula: D = V x T where, V is the speed or velocity D is distance T is the time In the given problem,there are two parts. Lets do the calculations for both parts separately: Part 1) Before the rain Time = 130/95 = 1.37 hours Time taken after the rain = Total time - time taken before the rain = 3.34 hours - 1.37 hours = 1.97 hours Distance covered after the rain = 1.97 hours x 65 km/h = 128 km Hence, a) The total distance covered = 130 + 128 = 258 km b) Average speed = Total distance/Total time = 260/3.34 = 78 km/h
