As planets move toward the sun, they tend to: A. move at constant speed B. speed up C. burn up D. slow down

Question

Physics

Manuel Murphy

1 February, 00:50

As planets move toward the sun, they tend to: A. move at constant speed B. speed up C. burn up D. slow down

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Answers (1)

Know the Answer?

Anaya Marks · Answer 1

B. speed up

Explanation:

The acceleration of an object due to a body's gravity is:

g = GM / r²

where G is the universal constant of gravitation,

M is the mass of the body,

and r is the distance from the body.

As a planet approaches the sun, r decreases. As r decreases, g increases.