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A bullet traveling horizontally at a speed of 350 m/sec?
hits a board perpendicular to its surface, passes through and emerges on the other side at a speed of 220 m/sec.
If the board is 4.10 thick, how long does the bullet take to pass through it? Final answer please
The board is 4.1cm thick
2 Answers
- SUBRAHMANYAM KVLv 51 decade agoFavorite Answer
Retardation a = (220² - 350²)/ (2*.041) = -903658.53 m/s²
time taken t = (220 -350)/(2 *a) = ( -130) /(2*( -903658.53) )=-7.104e-5 s or 71 μs
- DaveWHLv 71 decade ago
You forget to add the units for the thickness of the board !! 4.10 what? mm? cm? ins? m?
