Answer
If the velocity vector is parallel or anti-parallel (i.e. in the opposite direction) with the direction of the force, then the object moves along a straight line. However, if a component of the velocity vector is perpendicular to the direction of the force, then the object will move in a curved path.
Work Step by Step
If the velocity vector is parallel or anti-parallel (i.e. in the opposite direction) with the direction of the force, then the object moves along a straight line. However, if a component of the velocity vector is perpendicular to the direction of the force, then the object will move in a curved path.
For example, if we throw an object straight up in the air, the object moves along a straight line. If we throw an object at an angle, then the object moves in a parabolic path.
