A bullet is fired through a board, 14 cm thick, with its line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s, what is the acceleration (assume that it is constant) as it passes through the board

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blackstreet23 · Answer

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irishboy123 · Answer

use equation of motion:$$v^2 = u^2 + 2ax$$
you have v,u and x, so calculate a