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krek1111 [17]
3 years ago
5

When you lift a book of the ground to your desk, what kind of work do you do, negative or positive?

Physics
1 answer:
blondinia [14]3 years ago
8 0
It would be kinetic energy. Let's say the book is weighs 10 Newtons you need to use a force of 10 Newtons to lift the book. In other words it's positive. As you move the book you're giving it energy. Namely potential energy which will turn to kinetic energy if you let it go. So you're changing it's position and energy.
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Answer:

g = 8.61 m/s²

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distance of the International Space Station form earth is 200 Km

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r = 6400 + 200 = 6800 Km = 6.8 x 10⁶ n

using formula

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For vertical motion, use the following kinematics equation:

H(t) = X + Vt + 0.5At²

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A is the constant vertical acceleration

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