The traveler walked 5 km at a speed of 2 km per hour, then 2 km at a speed of 4 km per hour. what is its average speed?

univerkov | February 2, 2021 | education

These tasks: S1 (the first distance traveled by the traveler) = 5 km; V1 (first speed of the traveler) = 2 km / h; S2 (second distance) = 2 km; V2 (second speed) = 4 km / h.

To calculate the average speed of the traveler, we will use the formula: Vav. = (S1 + S2) / (t1 + t2) = (S1 + S2) / (S1 / V1 + S2 / V2).

Calculation: Vav. = (5 + 2) / (5/2 + 2/4) = 7/3 = 2.33 km / h.

Answer: The traveler was moving at an average speed of 2.33 km / h.

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