X=C2t2+C1t+C0
При t=0 x0=9
=8t2=4x2=105 см
X0=2C2t+C1
C0=9
C1=8
105=C2 *42+8*4+9
16C2=105–24–9=72
C2=4,5
X=4,5t2+8t+9
=V=9t+8a=
=9V=r2
2R2
2=R3 3 3=V*R2/(r2*R3)=(9t+8)*30/15*40=0,45t+0,4 3= 3=0,45Vm=r3*
3=20*(0,45t+0,4)=9t+8atm=r3
=0,45tatm=R3
=40*0,45t=18tanm=R3
23=40*(0,45t+0,4)2=40*(0,45 (t+0,88)2a=