Odpowiedzi

2010-03-14T13:41:52+01:00
L = s = 2m
v = 600 m/s
m = 8kg
F = ?

a = v/t
S = ½*at² = ½vt => t = 2s/v
a = v/2s/v = v²/2s
a = F/m => F = m * a = m * v²/2s = 8 * 600²/4 = 8 * 90000 = 720000 N = 720kN