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When a ball is lifted to a height of hig...

When a ball is lifted to a height of high h, when it is dropped just before touching the ground, what would be the kinetic energy acting on the ball.

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mgh., According to the conservation of energy potential energy is converted into kinetic energy just above the ground. Just before touching the ground the kinetic energy of the body is equal to mgh.
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Knowledge Check

  • In an athletic-meet an athlete has to throw a shot put with mass 10 kg with an initial velocity 1 ms at an angle 45^(@) with the horizontal from a platform 1.5 m above the ground. What will be the kinetic energy of this shot put when it just strikes the ground. Assume the air resistance to be negligible and take the value of 'g' to be 10 ms?

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