Physics1Ahw2

Physics1Ahw2 - Physics 1A Problem Set #2 Winter 2008 1) A...

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Physics 1A Winter 2008 Problem Set #2 1) A student is running at her top speed of 4.7 m/s to catch a bus, which is stopped at the bus stop. When the student is still a distance 41.0 m from the bus, it starts to pull away, moving with a constant acceleration of 0.172 m/s 2 . For how much time does the student have to run at 4.7 m/s before she overtakes the bus? For what distance does the student have to run at 4.7 m/s before she overtakes the bus? When she reaches the bus, how fast is the bus traveling? If the student's top speed is 3.00 m/s, will she catch the bus? What is the minimum speed the student must have to just catch up with the bus? For what time does she have to run in that case? For what distance does she have to run in that case? 2) A particle moves in the xy-plane. Its coordinates are given as functions of time by x ( t ) = R ( ω t sin ω t ) y ( t ) = R ( 1 cos ω t ) where R and ω are constants. (a) Sketch the trajectory of the particle. (This is the trajectory of a point on the rim of a wheel that is rolling at a constant speed on a

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This note was uploaded on 04/30/2009 for the course PHYS 318001200 taught by Professor Musumeci during the Winter '07 term at UCLA.

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Physics1Ahw2 - Physics 1A Problem Set #2 Winter 2008 1) A...

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