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MECHANICS EDEXCEL (M1)

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astarmathsandphysics:
dexcel jan10 ms

Book lover22:
i need june 09 markin scheme... i looked evrywhere! :(

ASAP plzzz. thnkuss! :D

winnie101:
how do i do the following
a particle P moves with constant acc. 2i-3j. at time t sec. its velocity is vms-1. when t=0, v=2i+7j
find the value of t when P is moving parallel to the vector i.


another ques:  when they say something is parallel to j, then do we say, that i=0, but in certain ques they say i=i hope u understand wat im asking
Thanks to anyone who can help

booklover: u can find the ms on ask.com and type in where can i find june 2009 mark scheme, i think the M1 June 2009 link

astarmathsandphysics:
v=u+at
v=2i+7j)+(2i-3j)t=i(2+2t)i+j(7-3t)
parallel to i means component of j=0
7-3t=0
t=7/3

astarmathsandphysics:
when they say parallel to j means i component of velocity=0
I will do a page on relative velocites on my website
I already have a page for relative positions
http://www.astarmathsandphysics.com/a_level_maths_notes/M1/a_level_maths_notes_m1_more_on_relative_vectors_and_velocities.html

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