A) During an ice show, a 63-kg skater leaps into the air and is caught by an initially stationary 75-kg skater. (a) What is their final velocity assuming negligible friction and that the 63-kg skater's original horizontal velocity is 4.6 m/s? (answer will have units of m/s) B) During an ice show, a 60-kg skater leaps into the air and is caught by an initially stationary 78-kg skater. Find their final velocity assuming negligible friction and that the 60-kg skater's original horizontal velocity is 5.8 m/s. (b) How much kinetic energy is lost? (answer will have units Joules, report it as a negative value)