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The easiest way to figure out this or just about any other unit conversion problem is to convert the units you are changing first. In this case, 1 yard is only 0.9144 meters and therefore 100 yards is only 91.44 meters.

The unit you are NOT changing is the second so now you can set up a ratio:

9.52 seconds / 100 meters x 0.9144 meters / 1 yard = (9.52 * 0.9144) seconds / yard

which is 8.76 seconds when rounded to the same number of significant digits.

NOTE: What you asked for is merely a conversion and as such it is imperfect. Had the race actually been only 100 yards (which is 8.56 meters or just over 28 feet shorter), the runners could have decided to use different strategies and their speeds would then be very different.

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Q: How fast is 100 meters in 9.58 seconds?

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40 yards is approximately 36 meters. If you assume that the first full second is linear acceleration up to top speed, to run 9.55 for 100m you'd accelerate from 0 to 11 meters per second in the first second, then run 11 meters per second from there on. In the first second you'll cover 5.5 meters. After that, you'll cover 11 meters every second and have 30.5 meters to go, so you'll do that in 2.75 seconds or so. This will give you a 40 yard dash time, electronically timed from the gun of 3.75 seconds. HOWEVER, there is one big difference between a football forty and the first 36 meters of a track hundred. The 40 starts when the runner does. This can take off up to a full tenth.

19 958 400

89 square meters = ~958 square feet.

To convert any decimal to percent, simply multiply the decimal by 100. Thus, 9.58 × 100 = 958%

1600 - 958 = 642

958+200 = 1158

958 x 84 = 80,472

2

Yes. 958 / 2 = 479

958 = CMLVIII in Roman numerals

233.6585

958 torr = about 127.7 kPa