a bullet moving with 10 m/s hits a wooden plank. the bullet is stopped after penetrating 2cm deep.calculate th

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a bullet moving with 10 m/s hits a wooden plank. the bullet is stopped after penetrating 2cm deep.calculate th

2007-05-22 17:42:14 · 3 answers · asked by vags 1 in Science & Mathematics ➔ Physics

3 answers

With the data given you can calculate the retardation

v^2=u^2+2as=0
a= -10X10/(2X0.02) = -2500m/s2

Also time taken for the penetration:
v=u+at
0=10-2500t
t=0.004sec

2007-05-22 19:52:28 · answer #1 · answered by alien 4 · 0⤊ 0⤋

???
Gonna need a little bit more information âº

Doug

2007-05-23 00:46:42 · answer #2 · answered by doug_donaghue 7 · 0⤊ 0⤋

calculate the what?

2007-05-23 00:46:56 · answer #3 · answered by arunhn 3 · 0⤊ 0⤋