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In the figure, block A (mass 1.8 kg) slides into block B (mass 2.2 kg), along a frictionless surface. The directions of velocities before and
after the collision are indicated; the corresponding speeds are v-5.9 m/s, va-2.1 m/s, and var-4.3 m/s. What is velocity VA
(including sign, where positive denotes motion to the right)?
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