2 years ago

What is the gravitational potential energy of the earth-sun system?

1 answer:

3 0

$PE = - \frac{mMG}{R}$

m mass earth
M mass sun
g gravitational constant = 6,6743 x 10 ⁻¹¹
R distance between sun and earth (radius of orbit)

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At what point is the KINETIC ENERGY at its highest?

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An object has the MOST kinetic energy when it's movement is the GREATEST.

Explanation:

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Wasted energy is an energy which is transformed without significant use.

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A freight train rolls along a track with considerable momentum. If it were to roll at the same speed but had twice as much mass,

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Answer:

The momentum would be doubled

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square root (29 squared - 20 squared)

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A 25 kg child is riding on a swing. If the child travels 8.9 m/s at the bottom of their swing, how high into the air is the chil

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Answer:

h = 4.04 m

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