
#1
Sep709, 01:01 AM

P: 34

1. The problem statement, all variables and given/known data
The figure shows the motion diagram, made at two frames of film per second, of a ball rolling along a track. The track has a 3.0mlong sticky section. http://img30.imageshack.us/img30/2278/screenshotkh.png < The graph with the coordinates 2. Relevant equations a=v/t 3. The attempt at a solution a=1.980/1.51 =3.96 a=32/21 = 1 + 3.96 I've tried a bunch of ways but could not get it [ 



#2
Sep709, 01:35 AM

P: 39

You are asked to figure out the acceleration of the ball in the sticky section of the track.
(1) First determine the initial speed [itex] V_i [/itex]? (2) Then determine the final speed [itex] V_f [/itex]? (3) What is the distance [itex] x [/itex] over which this change in speed occurs? (4) Have you learnt a formula which relates these three quantities? The formula I am thinking of is [tex] V_f^2  V_i^2 = 2 a x [/tex]. Then use this formula and and ask your teacher if it is legitimate to do so. 



#3
Sep709, 04:01 PM

P: 34

Ok, I got it. Thanks!



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