Physics Review Question Unit: mechanics Year: 1989 Question#: 15 Question: A 50.-kilogram student stands on the surface of the Earth. What is the magnitude of the gravitational force of the Earth on the student? (1 ) 490 N (2 ) 50. N (3 ) 9.8 N (4 ) 6.7 x 10-11 N What is this question really asking? Explanation by: Esy C [ Return to question menu ] Answer 1 490 N CORRECT When using the formula w(eight )= m(ass)g(ravity), and using the given mass and 9.8 m/s2, this is the value you get for weight. return to top Answer 2 50. N INCORRECT This answer doesn't fit when using the equation w=mg. Remember mass and weight are two different things. return to top Answer 3 9.8 N INCORRECT This answer looks familiar, but don't be phooled by it; it doesn't fit when using w=mg. return to top Answer 4 6.7 x 10-11 N INCORRECT This answer doesn't fit when using w= mg. return to top What's this question really asking? How much does the student weigh? return to top |
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