Read the following questions and give your answer using the following options:

Statement - 1 For one dimensional motion the angle between acceleration and velocity must be zero.
Statement - 2 One dimensional motion is always on a straight line.

Statement - 1 is false, Statement - 2 is true.

The correct answer is Option (4) → Statement - 1 is false, Statement - 2 is true.

One dimensional motion is always along straight line. But acceleration may be opposite of velocity and so angle between them will be 180°.