Practice question
Question
For an object in motion with constant acceleration in a plane, what is true when the acceleration is parallel to the initial velocity?
Explanation
When the constant acceleration is parallel to the initial velocity, the motion occurs in a straight line along the direction of the initial velocity, as the acceleration only changes the magnitude of the velocity, not its direction. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives The path is a straight line as the result, so option A is correct.