NDA 2023 Physics | Motion Of Object - Velocity and Acceleration | NDA Preparation ⚔️ By Vipin Sir

Displacement, velocity and acceleration of COM, Motion of COM.

In case of a uniform circular motion, velocity and acceleration are

In uniform circular motion, the velocity vector and acceleration vector are

Statemetnt - 1 : In circular motion, acceleration may be in any direction relative to the velocity . Statement -2 : Dot product of velocity and acceleration in circular motion may be positive , negative or zero.

Discuss the general relations for velocity and acceleration for motion of an one dimension in a plane.

Assertion: For motion in two or three diemensions, velocity and acceleration vecotrs must have any angle between 0^(@) and 90^(@) between them. Reason: For such motion velocity and acceleration of an object is always in the opposite direction.

The diplacement , velocity and acceleration in a simple harmonic motion are related as the

Derive an expression for instantaneous velocity and acceleration of a particle executing simple harmonic motion.

In case of a projectile motion, what is the angle between the velocity and acceleration at the highest point?