Odpowiedzi

2009-12-11T19:00:03+01:00
Dane:
m = 0,7 kg
t = 4 ms = 0,004 s
v = 14 m/s

szukane:
F = ?

F = Δp/Δt
Δp = p₁ - p₂ = mv - 0 = mv
Δt = t

F = Δp/Δt = mv/t = 2450 N = 2,45 kN
2 2 2