The answer would be b because AC don’t make sense
The acceleration of the particle is given by the formula mentioned below:
Differentiate the position vector with respect to t.
Differentiate both sides of the obtained equation with respect to t.
Substitute t=2 in the above equation to obtain the acceleration of the particle at 2 seconds.
The initial position is obtained at t=0. Substitute t=0 in the given position function.
Answer:
8
Step-by-step explanation:
k + 9 = 17
subtract 9 from both sides:
k = 8