The acceleration vector of a particle moving in space is a(t) = 2i + 6t j + 2k. (i) find the position vector r(t) provided that the particle has initial position r(0) = j and initial velocity v(0) = −5j. (ii) compute the curvature of the trajectory r(t) at the point (1, −3, 1).

multiplication is multiplication.   it might feel harder depending on what level of math you are in, but generally it will be the same old stuff, while implementing some new concepts and methods of solving work.

answer by jkismyhusbandbae:

a) how close a measured value is to the actual (true) value.

  measure of length.   there are 12 inches in a foot, and 36 inches in a yard.   one inch is exactly 2.54 centimeters.

accuracy is how close something is to an actual answer but it is not exactly correct.