Question 1:
See Dick run! See Jane run! Run, Dick! Run, Jane!
Jane runs at 4.27 meters per second. Dick runs at 4.38 meters per second.
See Dick and Jane start a 10 km race together. Run, run!
How far ahead of Jane is Dick when he finishes?
Answer: The time it takes each to finish the race is 10,000 m Dick: t = -------- = 2283 seconds 4.38 m/s 10,000 m Jane: t = -------- = 2342 seconds 4.27 m/s Therefore, Dick finishes 2342 - 2283 = 59 seconds earlier. At the time that Dick finishes, Jane has been running for 2283 seconds. She has run Jane: d = (4.27 m/s) * (2283 s) = 9748 m And therefore she is 10,000 m - 9748 m = 252 m behind Dick
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