Question
A 5 gm bulet initial velocity is 300ms-1
and after penetrating a 5cm plank then the bulet stopped . So how much time is needed to penetrate the plank..?
and after penetrating a 5cm plank then the bulet stopped . So how much time is needed to penetrate the plank..?
Answers
V^2 = Vo^2 + 2a*d.
0 = 300^2 + 2a*0.05, a = -900,000 m/s^2.
V = Vo + a*t.
0 = 300-900,000t, t = ?.
0 = 300^2 + 2a*0.05, a = -900,000 m/s^2.
V = Vo + a*t.
0 = 300-900,000t, t = ?.
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