Recent content by Unknown221

  1. U

    What is the mass of the planet?

    I got 54.8m/s as the velocity and before you said that the x and y time are not the same so should I use the y time to solve for the distance? Using the y time I get 157.4 as the ditance. Nvm got diff answer and got to go now, thanks for trying to help me though.
  2. U

    What is the mass of the planet?

    *The distance from the car to the edge of the cliff is 100m.
  3. U

    What is the mass of the planet?

    Anyone able to help me out?
  4. U

    What is the mass of the planet?

    2) 3) 1.00g of U-238 fuel is consumed. Assuming 100% efficiency, what is the nuclear energy used in joules? For this one would I use E=mc^2 and just fill it in with the data provided? 5) A rocket car uniformly accelerates at 15m/s2 and heads towards a cliff that is 75m high. At what distance...
  5. U

    What is the mass of the planet?

    Sorry I have a test tomorrow and am lost on how to do these questions.. Just need some help on how to get started..
  6. U

    What is the mass of the planet?

    I have a few questions that I'm not sure on how to do: 1) A 20kg mass is connected to a 8kg mass by a thin frictionless string on a pulley. It accelerates to 1.5m/s2 and the heavier mass slides along a rough surface. What is the coefficient of friction? 3) 1.00g of U-238 fuel is consumed...
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