The tram passed the first 300 m at a speed of 6 m / s, and the next 500 m in 50 s.
| July 5, 2021 | education
The tram passed the first 300 m at a speed of 6 m / s, and the next 500 m in 50 s. Determine the average speed of the tram along the way.
S1 = 300 m.
V1 = 6 m / s.
S2 = 500 m.
t2 = 50 s.
Vav -?
To determine the average speed of tram movement Vav, it is necessary to divide the entire path S traveled by it by the entire travel time t: Vav = S / t.
S = S1 + S2, t = t1 + t2.
The travel time of the first part of the path t1 is found by the formula: t1 = S1 / V1.
The formula for determining the average speed will be: Vav = (S1 + S2) / (S1 / V1 + t2).
Vav = (300 m + 500 m) / (300 m / 6 m / s + 50 s) = 8 m / s.
Answer: the average speed of the tram is Vav = 8 m / s.
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