. The position vector r of a missile at any time t is given by r = ti + (8t−t2)j, where i and j are unit vectors in the horizontal and upward vertical directions. Find its
(a) average velocity from t = 2 to t = 3, (b) velocity, speed and direction of motion when t = 4, (c) position vector when it is moving parallel to the vector i−2j, (d) acceleration vector.
. The position vector r of a missile at any time t is given by r = ti + (8t−t2)j, where i and j are unit vectors in the horizontal and upward vertical directions. Find its
(a) average velocity from t = 2 to t = 3, (b) velocity, speed and direction of motion when t = 4, (c) position vector when it is moving parallel to the vector i−2j, (d) acceleration vector.
(a) average velocity from t = 2 to t = 3, (b) velocity, speed and direction of motion when t = 4, (c) position vector when it is moving parallel to the vector i−2j, (d) acceleration vector.
william anim , 6 Years ago
Grade 12th pass
