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adnane.Physics
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when we use a change of reference
Change of reference in mechanics refers to the process of switching from one frame of reference to another in order to analyze the motion of an object. This is necessary because the motion of an object can appear different depending on the observer's point of view.
Changing the frame of reference can affect the measurement of an object's position, velocity, and acceleration. For example, the position of an object may appear different depending on the observer's point of view, but the velocity and acceleration will remain the same.
The two types of reference frames in mechanics are inertial and non-inertial frames. Inertial frames are those that are not accelerating, while non-inertial frames are those that are accelerating or rotating.
Relative motion is the motion of an object with respect to another object or reference frame. Change of reference involves switching between different reference frames, which can affect the relative motion between two objects. This is because the motion of an object can appear different depending on the observer's point of view.
Change of reference is used in many real-world applications such as navigation, engineering, and sports. For example, in navigation, pilots must consider the motion of their aircraft from both the ground frame of reference and the airplane's frame of reference. In sports, the trajectory of a ball may appear different to a player on the field compared to a spectator in the stands due to their different frames of reference.