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1. Two balls are tossed off the edge of a cliff with the same speed but...

1. Two balls are tossed off the edge of a cliff with the same speed but at different angles. one tossed horizontally and the other one tossed at 45 degree upward. Compare their PEs, KEs and times of flight while airborne.

2. How would you determine the density of an irregular-shaped unkown object if (a) it sinks in water and (b) it floats in water? List all the steps and explain the reasoning behind them.
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