Question

what is non zero acceleration at instant

Answer 1

hello friend here is your answer ____________________________________
Just imagine throwing a ball upwards with vertical velocity u.

The acceleration of the ball is -10 m/s^2 at any point of the journey ( -10 because it's oppositely directed to the velocity )

The velocity at any point = u -10t

Set this velocity equal to 0, and we get t=u/10.

Thus, u/10 seconds after throwing the ball, the ball will be at instantaneous rest, but the acceleration will be -10 m/s^2.
i hope it will help you.

Answer 2

Non zero acceleration is defined as the object which is in motion has change in its velocity or direction.