PHYSICS 1L03 Lecture Notes - Friction, Free Body Diagram, Mechanical Equilibrium
25 Jan 2014
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Questions for review: how many significant figures should be written in the sum of 7. 56 mm + 549. 165 mm + 20. 048 mm + 9702. 0098 mm. Ans: 10278. 78 (7 sig. figs. : a thunderstorm drops 7. 0 cm of rain on city that covers an area of 32 km by 45 km. Estimate the number of raindrops that fell during the storm. You may assume the diameter of a raindrop to be 2 mm. Ans: 10 16: an object is thrown vertically upward. Ans: c" (cid:120: a graph of x versus t (position vs. time) for a particle in straight-line motion is shown below. The average acceleration of the particle between t = 1. 5 s and t = 6. 5 s is: (cid:120) aaveg = [(v2-v1)/(t2 t1)] v1 is the slop of first line between t = 0 to t. = 2s, and v2 is the slop of line between t =
