44 (a) During an ice skating performance, an initially motionless 80.0-kg clown throws a fake barbell away. The clown's ice skates allow her to recoil frictionlessly. If the clown recoils with a velocity of 0.500 m/s and the barbell is thrown with a velocity of 10.0 m/s, what is the mass of the barbell? (4.00 kg) (b) How much kinetic energy is gained by this maneuver? (210 J) (c) Where does the kinetic energy come from? (The clown's muscles)
44 (a) During an ice skating performance, an initially motionless 80.0-kg clown throws a fake barbell away. The clown's ice skates allow her to recoil frictionlessly. If the clown recoils with a velocity of 0.500 m/s and the barbell is thrown with a velocity of 10.0 m/s, what is the mass of the barbell? (4.00 kg) (b) How much kinetic energy is gained by this maneuver? (210 J) (c) Where does the kinetic energy come from? (The clown's muscles)
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Transcribed Image Text:44 (a) During an ice skating performance, an initially motionless 80.0-kg clown throws a
fake barbell away. The clown's ice skates allow her to recoil frictionlessly. If the clown
recoils with a velocity of 0.500 m/s and the barbell is thrown with a velocity of 10.0 m/s,
what is the mass of the barbell? (4.00 kg)
(b) How much kinetic energy is gained by this maneuver? (210 J)
(c) Where does the kinetic energy come from? (The clown's muscles)
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