Course Hero we need your help on this one. Please save us. Thank you for your support.

QUESTION 4 An airplane's position vector at time t is described by the vector function ri(t) =. A flying saucer's position vector at time t is described by the vector function r2(t) =. The plane and the flying saucer both started flying at time t = -5, and stop flying at time t = 5. (a). Do the plane and the flying saucer collide? That is, are they ever in the same spot at the same time? (b). Do the paths of the airplane and the flying saucer intersect? That is, are they ever in the same spot at possibly different times