A Particle Starts from Rest at X_i = 0 and Moves

Multiple Choice

A particle starts from rest at x_i = 0 and moves for 10 s with an acceleration of +2.0 cm/s².For the next 20 s,the acceleration of the particle is -1.0 cm/s².What is the position of the particle at the end of this motion?

A) zero
B) +3.0 m
C) -1.0 m
D) +2.0 m
E) -3.0 m