During an ice skating performance, an initially motionless 79.5-kg clown throws a fake barbell away horizontally. The clown’s ice skates allow her to recoil frictionlessly. 1) If the clown recoils with a speed of 0.51 m/s and the barbell is thrown with a speed of 7.5 m/s, what is the mass, in kilograms, of the barbell? m2 = 2) How much kinetic energy, in joules, is gained by this maneuver? ΔKE =

During an ice skating performance, an initially motionless 79.5-kg clown throws a fake barbell away horizontally. The clown’s ice skates allow her to recoil frictionlessly. 1) If the clown recoils with a speed of 0.51 m/s and the barbell is thrown with a speed of 7.5 m/s, what is the mass, in kilograms, of the barbell? m2 = 2) How much kinetic energy, in joules, is gained by this maneuver? ΔKE =