Albert Einstein
John Kepler
Galileo Galilei
None of these
- Motion and rest both can be taken as relative. It implies that if we adjust the fixed reference points for an object, it may be from one point of motion and from the other at rest. For instance, if two people are travelling in a vehicle, then both of them are at rest since the fixed reference point is inside the vehicle.
- Relative motion is the measurement of an object’s motion with respect to any other object that is moving or stationary. Thus, in reference to the other moving object, the acceleration is not measured with reference to the earth, but is the momentum of the object as if it were in a static state. For example- a person seated in a helicopter is at zero velocity relative to the helicopter, but is travelling with respect to the ground at the same velocity as the aero-plane. Relative motion is in turn related with relative momentum, relative acceleration and relative speed.
- The concept that all motion is relative was proposed by Galileo Galilei in the 16th century.He developed the idea that there is no absolute motion but rather motion is only perceivable in relation to other objects.
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