ch09-p070 - 70. We use Eqs. 9-67, 9-68 and 4-21 for the...

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70. We use Eqs. 9-67, 9-68 and 4-21 for the elastic collision and the subsequent projectile motion. We note that both pucks have the same time-of-fall t (during their projectile motions). Thus, we have Δ x 2 = v 2 t where Δ x 2 = d and v 2 = 2 m 1 m 1 + m 2 v 1 i Δ x 1 = v 1 t where Δ x 1 = 2 d and v
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