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denis-greek [22]
3 years ago
9

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?
Physics
1 answer:
harkovskaia [24]3 years ago
4 0
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 <span> </span>
<span>Time taken after the rain = Total time - time taken before the rain  </span>
<span>                                        = 3.34 hours - 1.37 hours
                                        = 1.97 hours </span>
<span>Distance covered after the rain = 1.97 hours x 65 km/h
                                                  = 128 km</span>
Hence,
<span>a) The total distance covered =  130 + 128
                                           = 258 km
</span><span>b) Average speed = Total distance/Total time
                             =  260/3.34
                             = 78 km/h </span>
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