Answer: C, 7s + 3t and 3t + 7s.
Step-by-step explanation: Nothing is changing between the expressions except for their position. In addition, position does not matter though, so these two are the SAME EXPRESSION
Answer:
233 I work it out I got b try mark me as brainleast plz
The software rendering this question really butchered it... I think it's saying the displacement vector for the particle is
Differentiate twice with respect to time 
to get the velocity and acceleration vectors, respectively:
Then at 
, the acceleration of the particle is
which most closely resembles the first choice.
Answer:
the answer is the first choice .
