Assertion`:-` A particle having zero acceleration must have constant speed.
Reason `:-` A Particle having constant speed must have zero acceleration.

A particle is moving in a circle with a constant speed, the acceleration of the particle has

Assertion: A body having non zero acceleration can have a constant velocity. Reason: Acceleration is the rate of change of velocity.

Read each staremnt below carefully and state with reasons and expamples if it is true or false , (a) with zero speed at an instant may have non-zero accelration at that instant (b) with zero speed may have non-zero velocity (c ) with positive speed must have zero accleration (d) with positive value of acceleration must be speeding up.

A particle having almost zero mass and exactly zero charge is

Assertion :- A particle has positive acceleration it means that its speed always increases. Reason :- Acceleration is the rate of change of speed with respect to time.

Assertion: A particle follows only a parabolic path if acceleration is constant. Reason : In projectile motion path is parabolic, as acceleration is assumed to be constant at low heights.

A particle is moving on a circular path with constant speed, then its acceleration will be