Asked by Allyson
The first meters of a 100-meter dash are covered in 2 seconds by a sprinter who starts from rest and accelerates with a constant acceleration. The remaining 90 meters are run with the same velocity the sprinter had after 2 seconds.
a. Determine the sprinter's constant acceleration during the first 2 seconds.
b. Determine the sprinter's velocity after 2 seconds have elapsed.
-- I believe the velocity is 5m/s since the question implies that the sprinter ran 10 meters in 2 seconds. This is my first day in physics, and I really don't understand how to complete this question.
a. Determine the sprinter's constant acceleration during the first 2 seconds.
b. Determine the sprinter's velocity after 2 seconds have elapsed.
-- I believe the velocity is 5m/s since the question implies that the sprinter ran 10 meters in 2 seconds. This is my first day in physics, and I really don't understand how to complete this question.
Answers
Answered by
bobpursley
No, his average velocity was 5m/s. He started at zero, had constant acceleration, so he had to be at 10m/s at the end (so his average was 5m/s)
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.