A car travels up a hill at a constant speed of 37 km/h and returns dow

1.	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
Answer» ONG>Answer: The average SPEED is the ratio of total traveled distance to total time taken. Let d be the total distance traveled by the car. Thus distance traveled in each journey is d/2. So, the time taken for going up the hill is t 1 = v 1 (d/2) = 37 d/2 = 74 d Time taken for going down the hill is t 2 = 66 (d/2) = 132 d Thus, average speed is v AVG = t 1 +t 2 L = (L/74+L/132) L =47.4km

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

Answer» ONG>Answer:

The average SPEED is the ratio of total traveled distance to total time taken.

Let d be the total distance traveled by the car.

Thus distance traveled in each journey is d/2.

So, the time taken for going up the hill is t

(d/2)

d/2

Time taken for going down the hill is t

(d/2)

132

Thus, average speed is v

AVG

(L/74+L/132)

=47.4km

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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

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