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.
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!