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Ok, I have this problem...
The first 10 meters of a 100 meter dash are covered in 2 seconds by a sprinter who starts from rest and acceleraties with a constant acceleration. The remaining 90 meters are run with the same velocity the stprinter had after 2 seconds.
a) Determin the sprinter's constant acceleration during the first 2 seconds.
b) Determine the sprinter's velocity after 2 seconds have elapsed.
c) Determine the total time needed to run the full 100 meters.
What I don't understand is the 'accelerates with a constant acceleration' part. All I did to solve that part was solve for the average acceleration, which I think is wrong.
I ended up getting 2.5 m/s^2 for the acceleration.
Could anyone tell me whether or not I'm on the right track, or if I'm totally wrong, just point me in the right direction.
The first 10 meters of a 100 meter dash are covered in 2 seconds by a sprinter who starts from rest and acceleraties with a constant acceleration. The remaining 90 meters are run with the same velocity the stprinter had after 2 seconds.
a) Determin the sprinter's constant acceleration during the first 2 seconds.
b) Determine the sprinter's velocity after 2 seconds have elapsed.
c) Determine the total time needed to run the full 100 meters.
What I don't understand is the 'accelerates with a constant acceleration' part. All I did to solve that part was solve for the average acceleration, which I think is wrong.
I ended up getting 2.5 m/s^2 for the acceleration.
Could anyone tell me whether or not I'm on the right track, or if I'm totally wrong, just point me in the right direction.