Problema 18:
Problema 19:
A
VA=0
Tramo AB: t
g
=
B
h
Vo=15m/s
.t AB +
.
20m
a)
= -gt 15=10t
AB
T=1,5s 1s
h=35
H – 35 =
C
.
VC
I y II igualamos :
Tramo AC: =
.t AC + .
AC
H = (10)(t-1)2
35 + 5
= 5( + 1)
35 + 5
=5
30 = 10t
b)
=
=3s
H=5 H=80m
=15+10(1) =15+1
2
Por lo tanto :
= +gt
+ 10t + 5
t = 3s
H=5(t+1) …….. (II)
c)
=25