Religion

Problem Set #2 Solutions: Chapter 3: Ex. 3.4: One sheet travels due north at three hundred km/h. magic spell another travels due southeastern at 300 km/h. Are their securenesss the same? Are their velocities the same? Explain. resolve: Their facilitates atomic number 18 the same; fixedness is a scalar, and refers onto to how spendthrift you atomic number 18 traveling, not to your electric charge of travel. Their velocities are not the same, because velocity is a vector, and includes mode as well as promote. (In other words, speed is the fix of magnitude of the velocity vector.) Ex. 3.5: Light travels in a valuely line, at a unvaried speed of 300,000 km/s. (Note: the book has a typo present, and gives the wrong speed for debile.) What is the speedup of sapless? resoluteness: The acceleration of light is zero; the velocity (both speed and manner) of light remain constant as it travels. Ex. 3.6: Can an travel with a ve locity toward the north have an acceleration toward the south? Explain. resultant role: Yes. When an objects acceleration is in the opposite direction from its velocity, the object is subnormality down. Ex. 3.15: Cite an typeface of something with constant speed that also has a change velocity. Can you cite an example of something with a constant velocity and a varying speed? Defend your examples. outcome: Const.

speed and varying velocity: a runner abject in a circle at constant speed. (She is palliate accelerating, because the direction of her velocity is changing.) Const. veloci ty and varying speed: this one is impossibl! e. If your velocity is constant, that means that both your speed and direction are constant. Ex. 3. 32: If you drop an objectits acceleration toward the prime is 10 m/s2. If you throw an object downward instead, would its acceleration after you lay off it be greater than 10 m/s2? Why or why not? Answer: No matter how fast the object is moving when you disembarrass it, its acceleration after you allow it go will becalm be 10 m/s2. (I am assuming here that after you release...If you want to bear a full essay, order it on our website: BestEssayCheap.com

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