a)
m = 180000kg
F = m*a = 180000kg * 9.81 m/s2 = 1770000N
b)
m = 890kg
t = 1s
v = 5000 m/s
p = m * v = 890kg * 5000 m/s = 4450000Ns
F = p/t = 4450000Ns/1s = 4.45MN
c)
Fa = 4.45MN - 1.77MN = 2.68MN
a = Fa/m = 2.68MN/180000kg = 15 m/s2
von CarO, Chantal, Kenny 08:06, 18 April 2008 (UTC)