In an ice show a 450 kg skater leaps into the air and is, Ask an Expert

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In an ice show a 45.0 kg skater leaps into the air and is caught by an initially stationary 85.0kg skater.

(a) What is their final velocity assuming negligible friction and that the leaper's original horizontal velocity was 4.00 m/s?

(b) How much kinetic energy is lost?

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