Average and instantaneous speed. Relative speed when moving bodies in one direction and at the oncoming movement

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Relative speed

1) In different bodies reference systems are moving differently!

What about? Body position relative! Am I afraid?! Body movement relative!

Body movement from different points of view

Classic Act Adjustment Speed \u200b\u200bThe Body Speed \u200b\u200brelative to the fixed reference system is equal to the geometric amount of the body velocity relative to the movable system and the speed of the movable system relatively fixed

Relative speed Suppose that the speed of two material points is defined in the same reference system.

Relative speed is the speed of one material point in the reference system associated with the other. If the bodies move progressively, the relative speed is equal to the difference difference of these bodies:

Relative speed when driving in one direction when the bodies move in one direction the relative speed module is equal to the speed difference

The relative speed at the oncoming movement during the oncoming movement of the body is brought closer to the relative speed equal to the sum of their speeds, so the counter-collision of cars, trains is so dangerous.

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