Question

410 A planet has a radius one-half that
of the earth and mass one-fifth
that of the Earth. The gravitational
accertation at the surface of the planet is.
A. 4.0 m/s2
B.8.0m/s²
C. 12.5m/s²
D. 25 m/s2​

Answer 1

Answer:

option D is the correct answer ......xd

Explanation:

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Answer 2

G = GM/r2 so the acceleration due to gravity (and the weight of an object) is proportional to the mass of the planet and inversely proportional to the distance from the center of the planet squared. M ÷ 5 = g ÷ 5 and r ÷ 2 = g × 4, so the net effect is g × 4/5.

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