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kherson [118]
3 years ago
6

A ball is falling after rolling off a tall roof. The ball has

Physics
2 answers:
Rom4ik [11]3 years ago
8 0
C.
Because it’s falling it has acceleration in the y direction. If you have acceleration, you usually also have velocity, and since kinetic energy is KE= Mv^2 you know you have it. It also has potential energy because it has some height to it, and PE= Mgh.
Stella [2.4K]3 years ago
8 0

The ball has both kinetic and potential energy.

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Any two application of gravity
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Answer:

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Well our first application has helped us to send satellites around the solar system with what Nasa calls gravity assist. Using a particular planets gravity to slingshot a satellite to another destination. Look it up.

The next application much simpler but here on Earth. There are many hydro-electric power stations in use all over the world. Water is stored at a high level and released falling 100s of metres to a turbine where it generates electricity.

Hope that helps.

Explanation:

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3 years ago
Anybody know these ?
pashok25 [27]

Answer:

1. a) 72 N.

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Explanation:

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2 years ago
After two hours, 1/16 of the initial amount of a certain radioactive isotope remains undecayed. The half-life of the isotope is:
AlekseyPX
The half life is 30 minutes.
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by helping

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