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How do you find the kinetic energy of a ball before it hits the ground, given the potential energy that it has before it is dropped?

You hold on to a bowling ball at rest, and then let it fall onto a set of pins below. If the ball starts out with a gravitational potential energy equal to 2000 Joules relative to the ground, then what is the kinetic energy of the ball, right before it hits the ground.

Summary

  1. vi- initial velocity
  2. m/s- meters per second
  3. PEgi- ball's initial gravitational potential energy
  4. J- Joules
  5. KEf- ball's final kinetic energy
  6. KEi- ball's initial kinetic energy
  7. Etot,i- ball's initial total energy
  8. KEf- ball's final kinetic energy
  9. Etot,f- ball's final total energy

Notes

    1. vi- initial velocity
    2. m/s- meters per second
    3. PEgi- ball's initial gravitational potential energy
    4. J- Joules
    1. KEf- ball's final kinetic energy
    1. Ebottom- the total energy of the ball at the bottom, which is the total final energy
    1. KEi- ball's initial kinetic energy
    2. PEgi- ball's initial gravitational potential energy
    3. KEf- ball's final kinetic energy
    4. PEgf- ball's final gravitational potential energy
    1. KEi-ball's initial kinetic energy
    2. PEgf- ball's final gravitational potential energy
    1. vi- initial velocity
    2. m/s- meters per second
    3. KEI- initial kinetic energy
    4. J- Joules
    5. no motion means no kinetic energy!
    1. PEg- gravitational potential energy
    2. PEgf- ball's final gravitational potential energy
    3. J- Joules
    1. KEi- ball's initial kinetic energy
    2. PEgi- ball's initial gravitational potential energy
    3. KEf- ball's final kinetic energy
    4. PEgf- ball's final gravitational potential energy
    1. PEgi- ball's initial gravitational potential energy
    2. KEf- ball's final kinetic energy
    3. J- Joules