Question

2.
Define:
a) motion
b) Si unit​

Answer 1

Answer:

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WHEN A BODY CHANGES IT'S POSITION WITH RESPECT TO TIME AND REFERENCE FRAME THEN IT IS CALLED STATE OF MOTION

Answer 2

Answer:

In physics, motion is the change in the position of an object over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. ... One can also speak of motion of images, shapes and boundaries.

SI unit of motion is Meter per Second.