`=>` Motion is change in position of an object with time.
`text(Rectilinear Motion)`
Motion of objects along a straight line, also known as rectilinear motion. For the case of rectilinear motion with uniform acceleration, a set of simple equations can be obtained.
`text(Kinematics)`
In Kinematics,
`=>` we study ways to describe motion without going into the causes of motion.
`\color{purple}♣ \color{purple} " DEFINITION ALERT"`
`text(Point Object)`
Point object in Kinematics is an object whose size is negligible compared to length of distance traveled.
Benefit of treating an object as Point Object are
We can ignore its rotation about the axis of the object
e,g, For example, a ball will be spinning while it is moving in a trajectory.
We Can ignore its vibrations
e.g. a falling water drop - may vibrate as it moves
`=>` Mathematically, a particle is treated as just a point, an object without extension, so that rotational and vibrational motions are not involved.
A body need not be 'small' in the usual sense of the word, in order to be treated as a particle.
For example, if we consider the distance from the Earth to the sun, with respect to the distance between them, both the Earth and the sun can be treated as point objects. We can find out a great deal about the motion of the sun, planets and other celestial bodies, without appreciable error, by treating these bodies as particles.
`=>` Motion is change in position of an object with time.
`text(Rectilinear Motion)`
Motion of objects along a straight line, also known as rectilinear motion. For the case of rectilinear motion with uniform acceleration, a set of simple equations can be obtained.
`text(Kinematics)`
In Kinematics,
`=>` we study ways to describe motion without going into the causes of motion.
`\color{purple}♣ \color{purple} " DEFINITION ALERT"`
`text(Point Object)`
Point object in Kinematics is an object whose size is negligible compared to length of distance traveled.
Benefit of treating an object as Point Object are
We can ignore its rotation about the axis of the object
e,g, For example, a ball will be spinning while it is moving in a trajectory.
We Can ignore its vibrations
e.g. a falling water drop - may vibrate as it moves
`=>` Mathematically, a particle is treated as just a point, an object without extension, so that rotational and vibrational motions are not involved.
A body need not be 'small' in the usual sense of the word, in order to be treated as a particle.
For example, if we consider the distance from the Earth to the sun, with respect to the distance between them, both the Earth and the sun can be treated as point objects. We can find out a great deal about the motion of the sun, planets and other celestial bodies, without appreciable error, by treating these bodies as particles.