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3 years ago

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44. Belly-flop Bernie dives from atop a tall flagpole into a swimming pool below. His potential energy at the top is 10,000 J (r

elative to the surface of the pool). What is his kinetic energy when his potential energy is reduced to 1000 J

1 answer:

yaroslaw [1]3 years ago

6 0

Answer:

9000 J

Explanation:

Potential energy at the top = 10,000 J

Final potential energy = 1000 J

use the conservation of mechanical energy

Potential energy at top + kinetic energy at top = potential energy at a point + kinetic energy at that point.

10000 + 0 = 1000 + kinetic energy

kinetic energy = 10000 - 1000

kinetic energy = 9000 J

Thus, the kinetic energy is 9000 J.

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