Question

Why not applicable newtonian mechanics fast moving bodies?

Answer 1

We will not use the Newtonian formulation ...

As such, there are an infinite number of IRFs moving uniformly with .

In classical mechanics we assume the mass of a body to be.

Answer 2

hi mate

actually

mass,m

$m = \frac{m.}{ \sqrt{1 - \frac{v {}^{2} }{c {}^{2} } } }$

where ,m. = rest mass

c = speed if light

in,mechanics ,

v too small , that's why

$\frac{v {}^{2} }{c {}^{2} }$

is neglected

but when v is comparable to c then ,here Newton mechanics not work

.

I hope it help you ❤️

have a good life to you