DYNAMICS TEST A - NAME SPH3U3/6 DYNAMICS TEST A MULTIPLE...

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NAME________________________________ SPH3U3/6 DYNAMICS TEST A MULTIPLE CHOICE : Place your answer on the LEGAL SIZE paper. 1) ( 1K ) When a parachutist jumps from an airplane, he eventually reaches a constant velocity called the terminal velocity . This means that A) the acceleration is equal to g . B) the force of air resistance is equal to the weight of the parachutist. C) the force of air resistance is equal to 0 N . D) the force of gravity is equal to 0 N . E) the force of air resistance is less than the weight of the parachutist. 2) ( 1K ) A net force of 135 N [E] is applied to a certain object. As a result, the object accelerates with an acceleration of [ ] 2 4 0 2 . m s E - . The mass of the object is A) 0.178 kg B) 5.63 kg C) 111 kg D) 144 kg E) 3240 kg 3) ( 1K ) A ball is thrown up into the air. At the highest point in its trajectory (path), the net force acting on it is A) equal to its weight. B) greater than its weight. C) less than its weight but not 0 N . D) 0 N E) 9 8 . N k g 4) ( 1K ) In order for the equation F c v = 2 to be dimensionally correct ( 29 F f o r c e v v e l o c i t y = = , , the constant of proportionality c must have the units A) m k g B) k g m C) m s k g D) k g s m E) k g m s 5) ( 1K ) According to Archimedes, the buoyant force is equal to A) the weight of the object. B) the weight of the object submerged beneath the surface of the fluid. C) the weight of the fluid displaced by the object. D) the mass of the fluid displaced by the object. E) the ratio of the density of the fluid to that of the object. 6) ( 1K ) A 5 kg ball is suspended from the ceiling by a string under tension T . A second string is pulled from below with a force of 30 N. Which figure below best displays all the forces acting on the ball? A)
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This note was uploaded on 07/27/2010 for the course MATH MATH 1025 taught by Professor Tanny during the Spring '09 term at York University.

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DYNAMICS TEST A - NAME SPH3U3/6 DYNAMICS TEST A MULTIPLE...

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