Movement along a straight line w/vector functions

  • Thread starter morsel
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  • #1
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Homework Statement


A particle traveling in a straight line is located at the point (1, -1, 2) and has speed 2 at time t = 0. The particle moves toward the point (3, 0, 3) with constant acceleration 2i + j + k. Find its position vector r(t) at time t.


Homework Equations


Speed = |v|

The Attempt at a Solution


v(t) = 2ti + tj + tk + c1
I don't know how to find c1 from here.

Thanks in advance!
 
Last edited:

Answers and Replies

  • #2
Dick
Science Advisor
Homework Helper
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c1 is v(0). c1 should be vector pointing along the direction from (1,-1,2) to (3,0,3) with length 2, right? Sure you can't find that?
 

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