Motion | Friction |
1. Motion is a change in position or displacement of an object with respect to time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, time, and speed. | 1. Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. |
2. Contact between the objects is not required for motion of the object. | 2. Contact between the objects is required so that friction can come into existence. |
3. For example: pushing a block leads to its motion in the direction of applied force, throwing a ball etc. | 3.For example: walking on the ground , riding a bicycle etc. |