ch09-p062 - 62. (a) Let mA be the mass of the block on the...

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62. (a) Let m A be the mass of the block on the left, v A i be its initial velocity, and v A f be its final velocity. Let m B be the mass of the block on the right, v B i be its initial velocity, and v B f be its final velocity. The momentum of the two-block system is conserved, so m A v A i + m B v B i = m A v A f + m B v B f and (1.6 kg)(5.5m/s) (2.4 kg)(2.5m/s) (2.4 kg)(4.9 m/s) 1.6kg 1.9 m/s. AA i BB i f Af A mv v m +− == = (b) The block continues going to the right after the collision. (c) To see if the collision is elastic, we compare the total kinetic energy before the
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