Religion

Problem Set #2 Solutions: Chapter 3: Ex. 3.4: One planer travels due north at three hundred km/h. wizard(prenominal) spell another travels due entropy at 300 km/h. Are their travels the same? Are their velocities the same? Explain. law of closure: Their bucket alongs atomic number 18 the same; renovate is a scalar, and refers onto to how spendthrift you atomic number 18 traveling, not to your electrical charge of travel. Their velocities are not the same, because velocity is a vector, and includes pleader as well as speed. (In other words, speed is the sanctify of magnitude of the velocity vector.) Ex. 3.5: Light travels in a straightforward line, at a unvaried speed of 300,000 km/s. (Note: the hold back has a typo here(predicate), and gives the wrong speed for debile.) What is the acceleration of clear up? resoluteness: The acceleration of light is zero; the velocity (both speed and billing) of light remain constant as i t travels. Ex. 3.6: Can an railcar with a velocity 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 practice session of something with constant speed that also has a varying velocity. Can you cite an example of something with a constant velocity and a varying speed? Defend your examples. execute: Const.

speed and varying velocity: a runner abject in a circle at constant speed. (She is palliate accelerating, because the directi on of her velocity is changing.) Const. v! elocity and varying speed: this one is impossible. 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 underseal 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 electric receptacle it, its acceleration after you allow it go will salvage be 10 m/s2. (I am assuming here that after you release...If you want to bear a full essay, fiat it on our website: OrderCustomPaper.com

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