Question

Why do we need to go in same direction for uniform motion

Answer 1

Uniform in front of motion means that no net force is acting on the body. A body with no net force acting on it moves at a constant velocity or motion(including zero). It turns out that constant or uniform motion means traveling at a constant speed in an unchanging direction. Motion is a vector, and vectors have two parts. One part is the speed, and the other part is the direction. If either part changes, the motion is not uniform.