Grade 10 Physics Extra Practice Booklet Term 3 Finals A spaceship approaches a p

Question

Grade 10 Physics Extra Practice Booklet Term 3 Finals A spaceship approaches a planet from deep space. As the spaceship gets closer and closer to the planet, the pull of gravity decreases at an increasing rate increases at a constant rate increases at an increasing rate Know that g depends on the mass of the planet Gravity" is a force that acts between any two The gravitational force exerted by a body is directly proportional to its The mass of Jupiter is 300 times the Earth's mass. The mass of Mercury is 1/20 times the Earth's mass Which planet has the Which planet has the weakest gravitational field strength, g? Which property of a planet affects its gravitational field strength? (select one correct answer) Length Mass Volume Concept Know that in deep space, g can be considered as zero Deep space is space outside the solar system, far away from stars, and other masses. Since there are no masses anywhere nearby, the gravitational field strength can be said to be___. A body of mass 95000 kg is floating in deep space. What is the weight of the object? (select one correct answer) 1.9 times 10^10 N zero 950000 N What value can we give to the gravitational field strength in deep space? (select one correct answer) zero 6 N/kg 200000 N/kg

Explanation / Answer

66) C

68) it's masses.

69) (i) Jupiter

(ii) Mercury

70) b) mass

71) Zero gravity

72) W= mg= 0 since g=0.

73) gravitational field strength, g=F/M since in the surrounding there's no mass so F=0. Thus g=0.

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