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lesya692 [45]
3 years ago
15

you nose out another runner to win 100.000 m dash. if your total time for the race was 13.800 s and you aced out the other runne

r by 0.001 s, by how many meters did you win?
Physics
1 answer:
sammy [17]3 years ago
3 0

Your average speed was

(100 m) / (13.8 s) = 7.25 m/s .

If you finished 0.001s ahead of him, then at your average speed, that corresponds to

(7.25 m/s) x (0.001 s) = 0.00725 m

That's 7.25 millimeters ... about 0.28 of an inch !

NOTE:. I think this is only valid if your speed was a constant ~7.25 m/s all the way.

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a) 19536 joules of work are done.

b) The work is done by the engine on the structure of the cart.

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W = (1111\,N)\cdot (22\,m)

W = 24442\,N

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