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Physics

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You drive your car from home at an average spped of 78km/h for 2 h. Halfway to your destination, you develop some engine problems, and for 4 h you nurse the car the rest of the way. What is your average velocity for the entire trip?

  • Physics -

    You spent six hours to take a trip of distance twice 78km/hr*2hrs

    velocity= 2*78*2/6 km

    check my thinking.

  • Physics -

    This is the answer that I got when I worked it, but the webassign homework that I have marked the answer incorrect. I thought that maybe I was doing something wrong or missing an important part of the problem, thus causing my answer to be wrong.

  • Physics -

    The answer would be 52 km/h.

  • Physics -

    That is the answer above. 2*2*78/6=52 km/hr

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