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kherson [118]
3 years ago
11

the earth has more rotational kinetic energy now than did the cloud of gas and dust from which it formed. where did this energy

come from>
Physics
1 answer:
goldfiish [28.3K]3 years ago
3 0

Explanation:

Earth or any planet are actually born from huge clouds of gas and dust. Their stellar mass are fairly distributed at a radius from the axis of rotation. Gravitational force cause the cloud to come together. Now the whole gathered in smaller area. Now, individual particles come close to the roational axis. Thus, decreasing the moment of inertia of the planet.

As

I=mr^2

reducing r reduces I. However, the angular moment of the system remains always conserved. So, to conserve the angular momentum the angular velocity of the planet increases and so did the  otational kinetic energy

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A horse is running at 12m/s accelerated to 38m/s in 10 seconds. What is the horses acceleration.
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A horse is running at 12m/s accelerated to 38m/s in 10 seconds. What is the horses acceleration.

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a motorcycle is capable of accelerating at 5.1 m/s starting from rest how far can it travell in 1.5 sec
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almond37 [142]

Answer:

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