The body moves along the ОХ axis at a speed of 18 km / h in a positive direction.
| September 7, 2021 | education
The body moves along the ОХ axis at a speed of 18 km / h in a positive direction. Find the starting coordinate of the body, if after 10 seconds the final coordinate is 207 m.
Data: V (body speed, the vector is directed in the positive direction) = 18 km / h (in SI V = 5 m / s); t (elapsed time) = 10 s; x (end coordinate) = 207 m.
To find the desired initial coordinate of the body, we use the formula: x = x0 + V * t, whence x0 = x – V * t.
Let’s calculate: x0 = 207 – 5 * 10 = 157 m.
Answer: The required starting coordinate is 157 m.
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