two people observe a leaf falling from a tree. one person is standing on a ladder and the other is on the ground. if each person were to compare the energy of the leaf observed, would each person find the following to be the same or different for the leaf, from the point where it falls off the tree to when it hits the ground: (a) the kinetic energy of the leaf; (b) the change in gravitational potential energy; (c) the final gravitational potential energy?

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16-12-2022
Physics

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two people observe a leaf falling from a tree. one person is standing on a ladder and the other is on the ground. if each person were to compare the energy of the leaf observed, would each person find the following to be the same or different for the leaf, from the point where it falls off the tree to when it hits the ground: (a) the kinetic energy of the leaf; (b) the change in gravitational potential energy; (c) the final gravitational potential energy?

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tutorconsortium634 tutorconsortium634 · Answer 1 · 2022-12-23T01:28:59-05:00

a) The kinetic energy of the leaf is the same for both people:

ΔK=\frac{1}{2} mv^2, b) The change in gravitational energy from the point of view: Person on the ground: ΔG= -mgh, Person on the ladder: ΔG= mgh, c) The final potential energy is zero.

When an object is transported to a high altitude, what happens to its potential energy?

Since an object's gravitational potential energy is directly proportional to its height above the zero point, doubling its height will result in doubling its gravitational potential energy.

What does gravitational potential energy mean?

Gravitational potential energy is the energy that an object has as a result of being in a gravitational field.For an object close to the surface of the Earth, when the gravitational acceleration can be assumed to remain constant at around 9.8 m/s2, gravitational potential energy is most frequently used.

Where can I get the formula for gravitational potential energy?

P.E. is equal to mgh, where h is the height in meters, g is the acceleration brought on by gravity (9.8 m/s2 at the earth's surface), and m is the mass in kilograms, which is the formula for gravitational force. Note that the units for gravitational potential energy are the same as those for kinetic energy, kg m^2/s^2.

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