Question

Дано
S=2t^2-t+5
Найти
V-?
a-?

Answer 1

x(t)=x0+V0xt+ax*t^2/2, x(t)=5-1t+2t^2=5-1t+4t^2/2, x0=5, V0x=-1, ax=4,
a=(V-V0)/t, V-V0=at, V=V0+at=-1+4t.