A cyclist rides on a straight highway at a speed of 18 km / h.
| February 4, 2021 | education
A cyclist rides on a straight highway at a speed of 18 km / h. A wind blows at a speed of 5 m / s in his back. Does this wind help the cyclist move forward?
In the event that the wind blows to the cyclist’s back, it helps him, since the oncoming air flow does not resist the cyclist.
In this case, the speed of the cyclist increases and will be equal to the sum of the speed of the cyclist and the wind speed.
5 m / s = 18 km / h.
So the speed of movement will be equal to:
18 + 18 = 36 km / h.
If the wind blew in his face, he would resist the cyclist.
Its speed would be:
18 – 18 = 0 km / h.
Answer: The wind behind the back helps the cyclist.
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