Consider a graphical representation (figure) of simple harmonic motion as described mathematically in equation x(t) A cos(ur-d). When the particle is at point, P, on the graph (red dot), what can you say about its position, velocity and acceleration?
a. The position is positive, and the velocity is negative
b. The position is negative, and the velocity is positive
c. The position and velocity are both negative
d. The position and velocity are both positive
e. The acceleration is positive
f. The acceleration is negative