The body covered the first 1237 m of the way in 6 minutes, and the remaining 2 km in 19 minutes.

The body covered the first 1237 m of the way in 6 minutes, and the remaining 2 km in 19 minutes. Determine the average speed (SI).

S1 = 1237 m.

t1 = 56 min = 360 s.

S2 = 2 km = 2000 m.

t2 = 19 min = 1140 s.

Vav -?

The average speed of movement of the body Vav is determined by the formula: Vav = S / t, where S is the entire path covered by the body, t is the time of movement along the entire path.

The travel time on the entire path t is found by the formula: t = t1 + t2, where t1 is the time of movement on the first part of the path, t2 is the time of movement on the second part of the path.

The entire path S traversed by the body will be the sum: S = S1 + S2, where S1 is the length of the first part of the path, S2 is the length of the second part of the path.

Vav = (1237 m + 2000 m) / (360 s + 1140 s) = 2.158 s = 2.2 m / s.

Answer: the average vehicle speed is Vav = 2.2 m / s.