przekształć wzory ze względu na niewiadomą (podaną w nawiasie)
a) F= m V ²/ 2s (s)
b) Vx = m1V1 + m2V2 / m1 + m2 ( V2)
c) Ep = mg(Vt-½gt²) (V)
pilneee na jutro daje najj ;)
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a)
F =mv^2/2s ---(s)
F =mv^2/2s I*2s
2sF =mv^2 I:2F
s =mv^2/2F
===========
b)
Vx =(m1V1 + m2V2)/(m1 + m2) ---(V2)
Vx =(m1V1 + m2V2)/(m1 + m2) I*(m1 + m2)
m1V1 + m2V2 =Vx(m1 +m2)
m2V2 = Vx(m1 + m2) -m1V1 I:m2
V2 =[Vx(m1 + m2) -m1V1] /m2
===========================
c)
Ep = mg(Vt -1/2gt^2) --- (V)
Ep = mg(Vt -1/2gt^2) I:mg
Vt -1/2gt^2 =Ep/mg
Vt = Ep/mg +1/2gt^2 I:t
V = Ep/mgt +1/2 *gt
=================
(^ do potęgi)