What time did the sprinter achieve for the race

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Q. A sprinter accelerates from 0.0 m/s to 5.4 m/s in 1.2 s, and after that continues at this constant speed until the end of the 100 m dash. What time did the sprinter achieve for the race?

Q. Two adjacent sources each emit a frequency of 800Hz in air where the velocity of sound is 340 m/s. How much farther back would source 1 have to be moved as a result an observer in front of the sources would hear no sound?

Reference no: EM1372622

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