Physics 101 Zacharias Exercise 10 Fall 2011 Always pick the best answer A range
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Question
Physics 101 Zacharias Exercise 10 Fall 2011 Always pick the best answer A range of exercises ilustruting the scope of Newton's Law Frum all objets tismows snd rocksyi Earthly trajectories with pushing and shoving to satellitics and planctary mela .) Comsider a mass of 1,3 kg moving in a straight line experiences a change i in a time interval of 0 02 secoeds. Devermine the magnitude of the force a velocity equal to 5.0ms on this mass a.) 650 Nea tons b.3 400 Newtons e) 325 Newtons d.) 100 Newions Answer 2.) An arrow is shot straight up into the sir. At the top of the trnjectory, the the forces in the y direction) acting ce the arrow is vertical net force (the sum of a.) greaer than its weight b.) greater than zero, but less than its weight. c.) instantaneously equal to zero d.) equal to its weight 3.) Consider a 4.82 kg mass falling out of the sky, Dwtermine the force of atractice due so gravity factually just the weight of the 4 82 kg mass) betw cen the Eanh and the mass when the position of the mass is 38.2 meters above the surface of the Eanth. The acceleration due to gravity mear the surface ot the earth equals g-9.80 m a.) 0 Newton b.) 85.1 Newton c.) 47.2 Newton d.) 22.3 Newton Answer 4) A 10.0 kilogra Determine the average speed of the book during its fall to Earth. m physics textbook accidencally falls 116 meter high window (initial velocity is zero a.) 30.4 m/'s b.) 69.3 m's c) 23.8 m's d.) 42.3 m/'s 5.) A distant planet has an unknown mass is observed to have a moon with an unknown (and smaller) value for its mass. The distance between the planet and iss moon is 3.1 x 10 meters. Detenmine the circumference of the moon's orbit. a.) 2.5 x 10 meters b.) 1.3 x 10" meters c.) 5.1 x 10l meters d.) 7.5 x 10 metersExplanation / Answer
According to the given problem,
Using the concept of accelration,
a = change in velocity / time
a = 5/0.02
a = 250m/s2
Now, Using newtons laws,
F = ma
F = 250*1.3
F = 325 N [C]
Only 1 Q per chance as per chegg rules.
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