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  1. P

    What is the net force of this free-body diagram?

    An elevator, including passengers, has a mass of 1.0 x 10^3 kg. The cable attached to the elevator exerts an upward force of 1.2 x 10^4 N. Friction opposing the motion of the elevator is 1.5 x 10^3 N. The answer is 7.0 x 10^2 N [up] how & why?
  2. P

    How do I find the net force of a free body diagram?

    A water-skier is being pulled directly behind a motorboat at a constant speed of 20.0 m/s. The tension in the horizontal rope is 520 N.
  3. P

    You can't change the wind, you can however adjust your sail?

    Can someone please help me understand what the quotation is?.. THANK YOU! In addition, how can I illustrate this for say a bookmark for teenagers to buy and think about? THANK YOU!
  4. P

    "You can't change the wind, you can however adjust your sail."?

    Can someone please help me understand what the quotation is?.. THANK YOU!
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