Odpowiedzi

2009-10-11T22:43:02+02:00
A = 36 m/s^2
t = 4s

s=at^2/2

s1= 36x 4^2 / 2 = 18 x 16 = 288 m

a=36 m/s
t2 = 12s

s2= 36 x 12^2 /2 = 18 x 144 = 2592 m

Sc = s1 +s2
Sc = 2880 m

a2 = ?
t2 = 12s
s2 = 2880 m

s=at^2/2
2s = at^2
a = 2s/t^2
a = 5760 / 144 = 40 m/s^2

znak x^2 - to x do potegi drugiej
1 1 1