Impulse = force * Δtime = (mass * acceleration) * Δt = (weight) * Δt
Impulse = 50N * 2 s = 100 N*s
The same result you obtain if you calculate Impulse as the change in momentum = final momentum - initial momentum = m * Vf - m*Vo
Vo = 0
Vf = g*t
I = m*g*t = weight * t, which is the same formula used above.
Answer: 100 N*s
