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A bullet with a mass mb=11.9g is fired into a block of
wood at velocity vb=257 m/s The block is attached to a
spring that has a spring constant kk of 205 N/m. The
block and bullet continue to move, compressing the
spring by 35.0 cm before the whole system momentarily
comes to a stop. Assuming that the surface on which the
block is resting is frictionless, determine the mass mwmw
of the wooden block.

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