Are There Deficiencies in Newton's Laws?

[Questions999]

So I am studying the laws of Newton and I am wondering,are there any deficiencies related to the laws?I mean,somewhere where I can't use them or anything?

 

[Saxby]

Newton's laws do not apply on a quantum scale, if that's what your asking

 

[autodidude]

F=ma doesn't hold in non-inertial reference frames and I believe you must use special relativity when you deal with velocities close to the speed of light.