What is the principle of Physical Independence of Motions?

Principle of Physical Independence of Motions

Motion of projectile is two-dimensional motion in a vertical plane.

It can be resolved in two motions along horizontal & vertical direction These two motions are independent of each other.

This is called the principle of physical independence of motions.

At any instant velocity of projectile has two components :

(i) Horizontal Component : No acc. along horizontal $\left(\mathrm{a}_{\mathrm{x}}=0\right)$ so velocity along horizontal remains unchanged throughout the flight.

Horizontal motion is a uniform motion.

(ii) Vertical Component: Acceleration due to gravity in a downward direction will change the vertical component of velocity continuously throughout the motion.

Vertical motion is uniformly accelerated motion.

Also Read

JEE Physics Notes

To watch Free Learning Videos on JEE by Kota’s top IITian Faculties Install the eSaral App