The speed of the motor ship in still water is 25.4 km / h, and the speed of the current is 1.8 km / h. How many kilometers
| November 29, 2020 | education
The speed of the motor ship in still water is 25.4 km / h, and the speed of the current is 1.8 km / h. How many kilometers does the motor ship travel: 1) in 1.5 hours behind the river; 2) 2.4 hours upstream of the river?
1) The own speed of the ship = 25.4 km / h, and the speed of the current = 1.8 km / h. Therefore, the speed of the ship along the river = 27.2 km / h
S = V * t = 27.2 km / h * 1.5 h = 40.8 km.
2) The own speed of the ship = 25.4 km / h, and the speed of the current = 1.8 km / h. Therefore, the speed of the ship against the river flow = 23.6 km / h
S = V * t = 23.6 km / h * 2.4 h = 56.64 km.
Answer: 1) 40.8 km 2) 56.64 km
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