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Standard VII

Physics

Energy Transformation

A ball of mas...

Question

A ball of mass $1 k g$ is released from the tower of Pisa. The kinetic energy generated in it after falling through $10 m$ will be:

10 J

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9.8 J

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0.98 J

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98 J

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Solution

The correct option is D $98 J$
here kinetic energy is potential energy as it is released from height.
potential energy = mgh = $1 \times 9.8 \times 10 = 98 j o u l e$
Hence (D) is correct answer

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A ball of mass 1 kg is released from the tower of Pisa. The kinetic energy generated in it after falling through 10m will be:

The correct option is D 98 Jhere kinetic energy is potential energy as it is released from height.potential energy = mgh = 1×9.8×10=98jouleHence (D) is correct answer

A ball of mass $1 k g$ is released from the tower of Pisa. The kinetic energy generated in it after falling through $10 m$ will be:

The correct option is D $98 J$
here kinetic energy is potential energy as it is released from height.
potential energy = mgh = $1 \times 9.8 \times 10 = 98 j o u l e$
Hence (D) is correct answer