when you drop a ball out of a second story window, why doesn't it bounce back up to the window?

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  • 1 decade ago
    Favorite Answer

    Air resistance, and the fact that you can't convert 100% of the balls energy when it bounces. When the ball hits the ground, all of it's kinetic energy is converted to potential as the rubber is compressed. When the rubber pushes back to it's former shape the ball is propelled upwards.. however some energy is lost in the process so the ball will never bounce right back up to where it started.

  • 1 decade ago

    The force of the ground pushing against the ball as the ball hits the ground isn't greater than the force of gravity acting on the ball after it bounced. In other words as the ball is dropping gravity is speeding it up but as it is coming back up gravity is slowing it down.

  • Anonymous
    1 decade ago

    As the ball is falling, it's Gravitational Potential Energy is pretty high, with a small slice of thermal energy and kinetic energy. As the ball hits the ground, some of the GPE is converted into thermal energy. ((By the way, it's no longer really called GPE as it hits the ground, but "Elastic Potential Energy" because it's being squashed.)) Thermal energy can't be converted to back to GPE; it's stuck that way. Without that high amount of EPE ((or GPE)), the ball won't bounce back up as high.

  • 1 decade ago

    Has to due with the mass of the ball and the mass of the earth.

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  • 1 decade ago

    depends on the ball and what it lands on

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