The speed of the boat downstream is 23.7 km / h. Find your own speed of the boat
| July 16, 2021 | education
The speed of the boat downstream is 23.7 km / h. Find your own speed of the boat and its speed against the current, if the speed of the current is 3.8 km / h.
Given:
vpo t = 23.7 km / h
vt = 3.8 km / h
To find:
vc. -?
vprot. t. -?
Decision:
From the formula vcob. = vpo t. – vt:
1) 23.7 – 3.8 = 19.9 (km / h) – own speed of the boat.
From the formula vprot. t. = vcob. – vт:
2) 19.9 – 3.8 = 16.1 (km / h) – speed of the boat against the stream of the river.
Answer: 19.9 km / h and 16.1 km / h.
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