How to find the travel time in still water if the travel time is known upstream (8 h) and upstream (12 h)?
| January 28, 2021 | education
How to find the travel time in still water if the travel time is known upstream (8 h) and upstream (12 h)? Distance and speed are the same.
Distances, proper speed are the same and the ratio is true:
(V + V1) * t1 = (V – V1) * t2 = V * t, where V is the proper velocity, V1 is the current velocity, t1 is the time of movement downstream (t = 8 h), t2 is the time of movement against the current (t = 12 h), t – time of movement in stagnant water.
(V + V1) * 8 = (V – V1) * 12.
8V + 8V1 = 12V – 12V1.
12V – 8V = 12V1 + 8V1
4V = 20V1.
V = 5V1 or V1 = 0.2V.
(V + V1) * t1 = V * t.
(V + 0.2V) * 8 = V * t.
9.6V = V * t.
t = 9.6 h or 9 h 36 min.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
