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On a 150 m straight sprint, a cyclist accelerates from rest for 4.5 s at 3.8 m/s2. How long will it take her to complete the 150 m track, as
Question
On a 150 m straight sprint, a cyclist accelerates from rest for 4.5 s at 3.8 m/s2. How long will it take her to complete the 150 m track, assuming she maintains her speed for the remaining part of the track?
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Physics
4 years
2021-09-04T06:12:04+00:00
2021-09-04T06:12:04+00:00 1 Answers
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Answer:
It takes 6.52 s to complete the 150 m track.
Explanation:
Let’s find the position of the cyclist during the acceleration.
Now, the final speed at this distance will be:
Now, we know that x(tot) = 150 m, the remaining part will be:
Therefore, the time is:
I hope it helps you!