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OpenStudy (marg):
An indestructible bullet 2.5 cm long is fired straight through a board that is 8.7 cm thick. The bullet strikes the board with a speed of 421 m/s and emerges with a speed of 273 m/s. What is the average acceleration of the bullet through the board? Answer in units of m/s^2
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OpenStudy (anonymous):
Use vfinal^2 - vstart^2 = 2as
OpenStudy (marg):
what does 2as mean?
OpenStudy (anonymous):
2*acceleration*distance
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