College Physics Quiz
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LINEAR MOMENTUM & COLLISIONS
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Two pucks, A and B, are on a frictionless horizontal ice rink. Puck A (mass mAm_A) has initial velocity (3.0i^+4.0j^)(3.0 \hat{i} + 4.0 \hat{j}) m/s. Puck B (mass mB=2mAm_B = 2 m_A) has initial velocity (−6.0i^−2.0j^)(-6.0 \hat{i} - 2.0 \hat{j}) m/s. They collide and stick together. During the collision, an external impulse of J⃗ext=(6.0i^)\vec{J}_{ext} = (6.0 \hat{i}) N·s is applied to the system. What is the final velocity of the combined mass?
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