The position vector of a particle is r(t). Find the requested vector.
-The acceleration at t = 2 for r(t) = ( 7t - 3 )i + ( 10 - t)j + ( 2 - 3t)k
A) a( 2) = -144i - j + 4k
B) a( 2) = 144i + 4k
C) a( 2) = -144i + 4k
D) a( 2) = -36i + 4k

Question

The position vector of a particle is r(t). Find the requested vector.
-The acceleration at t = 2 for r(t) = ( 7t - 3  )i + ( 10 - t)j + ( 2  - 3t)k
A) a( 2) = -144i - j + 4k 
B) a( 2) = 144i + 4k 
C) a( 2) = -144i + 4k 
D) a( 2) = -36i + 4k

Quizplus · Accepted Answer

The Answer of The position vector of a particle is r(t). Find the requested vector.
-The acceleration at t = 2 for r(t) = ( 7t - 3  )i + ( 10 - t)j + ( 2  - 3t)k
A) a( 2) = -144i - j + 4k 
B) a( 2) = 144i + 4k 
C) a( 2) = -144i + 4k 
D) a( 2) = -36i + 4k

The Position Vector of a Particle Is R(t)