The ant rises up a 10 m birch tree at a speed of 11 m / s. What is his average speed
| March 31, 2021 | education
The ant rises up a 10 m birch tree at a speed of 11 m / s. What is his average speed if in the middle of the way he made 5 minutes to stop.
S = 10 m.
V = 11 m / s.
trest = 5 min = 300 s.
Vav -?
The average speed of movement Vav is determined by the formula: Vav = S / t, where S is the entire path traveled by the body, t is the time of the entire movement.
The time of the entire movement t will be the sum: t = tost + tdv, where tot is the stopping time, tdv is the time the ant moves without stopping.
tдв = S / V.
Vav = S / (tost + S / V).
Vav = 10 m / (300 s + 10 m / 11 m / s) = 0.03 m / s.
Answer: the average speed of the ant is Vav = 0.033 m / s.
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