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प्रश्न
A ball of mass m is thrown vertically up with an initial velocity so as to reach a height h. The correct statement is:
विकल्प
Potential energy of the ball at the ground is mgh.
Kinetic energy to the ball at the ground is zero.
Kinetic energy of the ball at the highest point is mgh.
Potential energy of the ball at the highest point is mgh.
उत्तर
Potential energy of the ball at the highest point is mgh.
Explanation:
At the highest point, the ball momentarily comes to rest, and thus its kinetic energy becomes zero.
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