Physics, 22.07.2019 17:30 saabrrinnaaa
In which of the following situations has work been done? select one: a. a weightlifter holds a 50kg barbell over his head for 3 minutes. b. a yoga instructor holds a handstand for 1 minute. c. a man pulls against a stationary fire truck for 5 minutes. d. a child pushes a 2kg toy 10m across the floor.
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In which of the following situations has work been done? select one: a. a weightlifter holds a 50k...
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