Answers please

Problem 1. (1 point) Find the velocity, acceleration, and speed of a particle with posi- tion function r(1) = (-7tsin(1), -7r cos(t), -312) VO) = a(1) = [VO = Answer(s) submitted: (incorrect) Problem 2. (1 point) Find the velocity and position vectors of a particle with accelera- tion a(1) = 9k, and initial conditions v(0) = 4j + 4k and r(0) = 5i + 2j -3k. VO= it -it k r(0) = i+ k Answer(s) submitted: . . (incorrect) Problem 3. (1 point) Given that the acceleration vector is a (1) = (-4cos(2))i + (-4sin(21))j + (2r) k, the initial velocity is v (0) = i+k, and the initial position vector is r (0) = i+ j +k, compute: A. The velocity vector v () = _ _it i+ k B. The position vector r () = _ _it. it k Answer(s) submitted: (incorrect)