How is the position of a particle moving along a staright line describ...
Position of a particle moving along a straight line described by a number:
The position of a particle moving along a straight line is described by a number which is known as its displacement. Displacement is defined as the distance between the final and initial positions of the particle. It is a vector quantity, which means it has both magnitude and direction.
Direction of motion specified by the number describing position:
The direction of motion of the particle can be specified by the sign of its displacement. If the displacement is positive, it means that the particle is moving in the positive direction along the line. On the other hand, if the displacement is negative, it means that the particle is moving in the negative direction along the line. If the displacement is zero, it means that the particle is not moving at all.
For example, consider a particle moving along a straight line. If its initial position is x1 and its final position is x2, then its displacement can be calculated as:
Displacement = x2 - x1
If x2 > x1, then the displacement is positive, which means that the particle is moving in the positive direction along the line. If x2 < x1,="" then="" the="" displacement="" is="" negative,="" which="" means="" that="" the="" particle="" is="" moving="" in="" the="" negative="" direction="" along="" the="" line.="" if="" x2="x1," then="" the="" displacement="" is="" zero,="" which="" means="" that="" the="" particle="" is="" not="" moving="" at="" />
In conclusion, the position of a particle moving along a straight line is described by its displacement, which is a vector quantity that has both magnitude and direction. The direction of motion can be specified by the sign of the displacement, which indicates whether the particle is moving in the positive or negative direction along the line.
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