The tram passed the first 100 m at a speed of 5 m / s and the next 600 m at a speed of 10 m / s. Find the average speed.

Given:
v1 = 5 m / s – speed on the first section of the path; S1 = 100 m – the first section of the path;
v2 = 10 m / s – speed on the second section of the track; S2 = 600 m – the second section of the path.
It is required to find Vav – the average speed along the entire path.
Vcp = S / t = (S1 + S2) / (S1 / v1 + S2 / v2) = (100 + 600) / (100/5 + 600/10) = 700 / (20 + 60) = 700/80 = 8.75 m / s.
Answer: The average speed is 8.75 m / s.