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10 June, 22:20

The world speed record on water was set on October

18,1978 by Ken Warby. If ken drove his motorboat a

distance of 1500m in 3,1023, how fast was his boat

moving in meters per second and kilometers per hour?

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Answers (1)
  1. 10 June, 22:26
    0
    Answer: Remember speed is distance divided by time, so if he travels 1000 m in 7.045 s, his speed is

    (1000 m) / (7.045 s) = 141.9 m/s.

    Note there are 1609 metres in a mile, or 1 mi = 1609 m, so m = 1/1609 mi, or

    141.9/1609 mi/s = 0.08822 mi/s. Now, note that 1 h = 3600 s, so the speed is

    0.08822*3600 mi/h = 317.6 mi/h.
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