A 5kg penguin at rest on ice catches a 5kg medicine ball moving at 5m/s what velocity will the penguin have after the catch

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It's have to be 12 or idk

How many calories in food

Molybdeum(mo)orruthenium (ru)actually, elements with similar chemical properties as technetium would bemn, re, and bh. this is because elements in the same group/family (column) have similar chemical properties. elements in the same period (row) have the same number of energy levels (or shells).