7,8 pliss bentar lg dikumpulin

8). Dik = h = 12,5m
ph = 131.250 pa
g = 10m/s2
Dit = p = ph : g × h
p = 131.250 : 10 × 12,5
p = 131.250 : 125
p = 1.050 kg/m3

a = (V2-V1)/(t2-t1) = (V2-0)/(2-0) = 1/2 V2

S = V1t + 1/2 at²

8 = 0 + 1/2 (1/2 V2) 2²

8 = V2

a = 1/2 V2 = 1/2 * 8 = 4 m/s²


s(5) = V1t + 1/2 at²
       =  0 + 1/2 * 4 * 5²
       =  50 m