(A) 5.3
(B) 6
(C) 8
(D) 8.8
(E) none of these
For Questions 8–10 use the following information: The velocity v of a particle moving on a curve is
given, at time t, by When t = 0, the particle is at point (0,1).
Questions 8–13 are BC ONLY.
- At time t the position vector R is
(A)
(B)
(C)
(D)
(E)
- The acceleration vector at time t = 2 is
(A)
(B)
(C)
(D)
(E) none of these
- The speed of the particle is at a minimum when t equals
(A) 0
(B)
(C) 1
(D) 1.5
(E) 2
- A particle moves along a curve in such a way that its position vector and velocity vector are
perpendicular at all times. If the particle passes through the point (4, 3), then the equation of the
curve is
(A) x^2 + y^2 = 5
(B) x^2 + y^2 = 25
(C) x^2 + 2y^2 = 34
