A particle initially at rest undergoes rectilinear (i.e.,straight line)motion with an acceleration that is constant in magnitude and direction.The velocity of the particle
A)is constant in magnitude and direction.
B)is constant in direction only.
C)is constant in magnitude only.
D)can change in magnitude and direction.
E)is described by none of these.

Question

Quizplus · Accepted Answer

When a particle undergoes rectilinear motion with constant acceleration, its velocity changes in magnitude but not in direction. The direction of the velocity remains constant along the straight line of motion.

A Particle Initially at Rest Undergoes Rectilinear (I