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Motion
Motion An object is said to be in motion if it changes its position with respect to a stationary reference point or origin.
Rest An object is said to be at rest if it does not changes its position with respect to a stationary reference point or origin.
An object can be in the state of both rest and motion with respect to different reference points.
Motion and rest are related term which implies that they are dependent upon the reference points to be described completely.
Physical Quantity quantities which can be measure with a device and have a unit are physical quantities.
Scalar Quantities Quantities that can be specified by describing their magnitude only. Example : Length ,Mass, Volume ,Distance.
Vector Quantity Quantities which require magnitude and direction both to be described completely are called vector quantity. Example: Weight, Displacement, Force, Velocity
Distance It is the actual length of the park from initial to final position
Displacement  It is the shortest distance between the initial and the final point
Distance

Displacement

It is the actual length of the park from initial to final position

It is the shortest distance between the initial and the final point

It depends on the path followed

There is only one shortest distance

It is a scalar quantity

It is a vector quantity

Distance can never be zero

It can be zero.

Differences between Distance and Displacement

Uniform and nonuniform motion

Uniform motion – An object is said to be in uniform motion when it covers equal distances in equal intervals of time. When an object is in uniform motion it moves with uniform speed. The Distance /Time graph of an object moving in uniform motion is a straight line.
Nonuniform motion An object is said to be in nonuniform if it covers equal distance in unequal interval of time or vice versa or both. An object is in nonuniform motion has variable speed. . The Distance /Time graph is a curved line.

