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A car travels up a hill at a constant speed of 37 km/h and returns down the hill at a constant speed of 66 km/h. Calculate the average speed for the whole trip
By definition the average speed is the ration of the total traveled distance and the total traveled time. Let us introduce the total traveled distance of the car as L. Then the time of the travel up the hill ist1 = L/74The time of the travel down the hill ist2 = L/132The total traveled time is t = t1 + t2 = L/74 + L/132 = 0.0211 LThen the average velocity is Vavg = L/t = L/0.0211 L = 47.393 km/hr
By definition the average speed is the ration of the total traveled distance and the total traveled time. Let us introduce the total traveled distance of the car as L. Then the time of the travel up the hill is
t1 = L/74
The time of the travel down the hill is
t2 = L/132
The total traveled time is
t = t1 + t2 = L/74 + L/132 = 0.0211 L
Then the average velocity is
Vavg = L/t = L/0.0211 L = 47.393 km/hr
Dear student Average speed Of thw whle trip will be = 2V1V2 / V1+ V2 => 2* 37 * 66 /103 => 47.47 m/sec Hope this clears Good Luck
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