А=10см
Т=4с
ω=2π/T=2*3,14/4 = 1,57 1/c
v=Α*ω=0,1*1,57=0,157 м/с
a=|A*ω²|=0,1*1,57²≈0,25 м/с²
X(t)=Acos(wt)=0,1cos(1,57*t)
a(t)=-A*ω²cos(wt)= -0,1*1,57²*cos(1,57*t)= -0,25*cos(1,57*t)
