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A 15 g bullet strikes and embeds in a 2.2 kg block suspended at the end...

A 15 g bullet strikes and embeds in a 2.2 kg block suspended at the end of a 1.1 m string. After the collision the string rises to a maximum angle of 25 degrees to the vertical. Find: a) the speed of the bullet: m/s b) the percentage loss in kinetic energy due to the collision: %

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