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MrMuchimi
3 years ago
6

The object moves with BLANK from A to B. it BLANK from B to C. it moves with BLANK from C to D.

Physics
1 answer:
Ganezh [65]3 years ago
4 0

Note that this is a position vs time graph.

From A to B, the graph is a straight line with a nonzero slope. This indicates a constant velocity.

From B to C, the graph is a straight line with 0 slope. This indicates a constant position, i.e. the object remains stationary.

From C to D, the graph is a straight line with a nonzero slope. This indicates a constant velocity.

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For this problem we use energy conservation, the energy initiated is potential and kinetic and the final energy is only potential (infinite r)

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When the body is at a distance R> Re, for the furthest point (r2) let's call it Rinf

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If we do Rinf = infinity     1 / Rinf = 0

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The mechanical energy is conserved  

 

      Em = -G m1  M_{earth} / R

      Em = - G m1  M_{earth} / R

     R = int        ⇒  Em = 0

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Hope this helps! Have a wonderfully wonderful day!

Cheers mate!

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