Uniformly Accelerated Motion for Short Distances

[GSaldutti]

Why don't these equations (and the rest in the set) work over long distances?

Vf= V₀ + at
D= (1/2)(V₀ + V_f)t
D= (V₀)(t) + (1/2)(a)(t²)
etc...

 

[ZapperZ]

Why don't these equations (and the rest in the set) work over long distances?

Vf= V₀ + at
D= (1/2)(V₀ + V_f)t
D= (V₀)(t) + (1/2)(a)(t²)
etc...

Whatever gave you the idea that these do not work over long distances? How long is "long"?

Zz.