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  1. M

    Question regarding average velocity

    Homework Statement What is the average velocity if you drive a distance of 472.5 km at a speed of 40 km/h, then the same distance at a speed of 65 km/h? Answer in units of km/h. Homework Equations t = d / v The Attempt at a Solution 11.8125 = 472.5 / 40 7.269230769 = 472.5 / 65...
  2. M

    Help? I don't get this at all.

    Homework Statement A perfectly spherical piece of metal is found at the bottom of a wishing well. The mass of the object is 0.65 kg and the radius is .25 m. What would be it's weight if it had the same volume and were made of pure gold? The density of pure gold is 19,3000 kg/m^3. Answer in...