The speed of the ship along the river is 42.8 km / h. The current speed is 2.8 km / h.
| June 17, 2021 | education
The speed of the ship along the river is 42.8 km / h. The current speed is 2.8 km / h. Find your own speed of the ship and its speed upstream.
To calculate the own speed of the ship, it is necessary to subtract the speed of the river flow, which is 2.8 kilometers per hour, from the speed known to us, namely 42.8 kilometers per hour.
In numerical form, we get the following expression.
42.8 – 2.8 = 40 kilometers per hour.
To calculate the speed of a motor ship against the current, it is necessary to subtract the speed of the river flow, which is 2.8 kilometers per hour, from its own speed, namely 40 kilometers per hour.
In numerical form, we get the following expression.
40 – 2.8 = 37.2 kilometers per hour.
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