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OpenStudy (anonymous):

A block of wood (10kg) at rest is hit by a bullet (50g) that embeds itself in the block and causes both to now move at 2.7 m/s eastward. What is the initial velocity of the bullet?

OpenStudy (ajprincess):

Use conservation of momentum mv=(m+M)v_1 Here m-mass of bullet M-mass of block v-initial velocity of the bullet v_1-final velocity of the combined body Does that help?

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