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In time, t, required to drive a fixed distance varies inversely as the speed r. It takes 5hr at a speed of 18km/h to drive a fixed distance?

Science & Mathematics by Anonymous 2018-06-15 19:32:47

Social Science

In time, t, required to drive a fixed distance varies inversely as the speed r. It takes 5hr at a speed of 18km/h to drive a fixed distance?

5 answers

How long will it take to drive the same distance at a speed of 29 km/h?

  • Anonymous

    Distance = 90 km Time = 90/29 hours 3 hours 6 mins 12 seconds

  • Anonymous

    t = d/r 5 = d/18 90 = d t = 90/29 t = 3 hr 6 min 12.4 sec

  • Anonymous

    3.1 hrs

  • Anonymous

    t = K / r ===> K = 80 ; if r = 29 then t = 80 / 29 ≈ 2.75 hours

  • Anonymous

    The first step is to use the following equation to determine the distance. d = v * t d = 5 * 18 = 90 km Use the same equation to determine the time at 29 km/h. 90 = 29 * t t = 90 ÷ 29 This is approximately 3.1 hours.

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