Odpowiedzi

2010-03-11T20:30:59+01:00
Dane:
t=10[s];
V=54[km/h]/3,6=15[m/s];
a=Vk/t;
Jednostka:
[a]=[m/s/s]=[m/s2];
a=15/10=1,5[m/s2];
s=(a*t2)/2;
Jednostka:
[s]=[(m/s2)/(s2)]=[m];
s=(1,5*100)/2;
s=75[m].
Odp.a=1,5[m/s2];s=75[m].
8 3 8
2010-03-11T20:33:29+01:00
T - 10s
v - 54 km/h = 15 m/s
a - ?
s - ?
v = a * t / : t
a = v/t
a = 15/10
a = 1,5 m/s^2
s = at^2/2
s = 1,5 * 10^2/2
s = 150 m
10 1 10