Resposta :
1 ) -
90km/h = 25 m/s
v = vo + at
0 = 25 - 10t
10t = 25
t = 2 , 5 s
h = gt²/2
h = 10(2,5)²/2
h = 31,25 metros
2 ) -
h = gt²/2
h = 10(5)²/2
h = 125 metros
3 ) -
h = gt²/2
80 = 10t²/2
80 = 5t²
t² = 16
t = 4 segundos
4 ) -
h = gt²/2
100 = 10t²/2
100 = 5t²
t² = 20
t = 4,472 segundos
s = so + vt
s = 0 + 40(4,472)
s = 178,88 metros
------------------------- > 178,88 m
5 ) -
sen(30) = vv / 100
1/2 = vv / 100
vv = 50 m/s
v = vo + at
0 = 50 - 10t
10t = 50
t = 5 segundos
h = gt²/2
h = 10(5)²/2
h = 125
125 + 195 = 220 metros
----------------------- > 220 m