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Precalculus Mathematics Homework Help
Interpretation of an impulse graph
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[QUOTE="lovelyrwwr, post: 4538129, member: 339520"] [ATTACH=full]62919.vB[/ATTACH] Which of the following is true if the mass is at rest at t=0 ? A. Velocity of the mass is decreasing btwn 10 and 20 seconds. B. The accel. of the mass is constant between 0 and 10 seconds C. At 40 seconds the mass is stationary. D. The distance trsveled by the mass bten 0 and 10 seconds is equal to that traveled btwn 10 and 20 seconds. The answer is C. I understand why I can rule out answer B. But I do not see why A and D are not true. From the graph, I see that force decreases during 10 < t < 20 seconds. Thus accel gets smaller but is still positive, which means that velocity should still be increasing. However what I do not understand is what the inflection point at t=10 (and t=30 for that matter) represents...I mean between 0-20 seconds, velocity is always increasing (according to the solution, but then what does this inflection point at t=10 seconds represent? This problem is driving me insane, please help! :) [/QUOTE]
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Precalculus Mathematics Homework Help
Interpretation of an impulse graph
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