In a weightlifting competition, Jenna does 150 joules of work in 3 seconds. How much power did she use? Physics Work and Energy Power 1 Answer Anish M. Mar 22, 2018 50 Watts Explanation: Power is the amount of work done per unit time. Jenna does 150 joules of work in 3 seconds so her power is #150/3# = #50# watts Answer link Related questions What is power? How are work and power related? How are force and power related? How does power affect work? How does power differ from energy? How does power change with voltage? How does power relate to torque? How does work relate to conservation of energy? How does work relate to gravitational potential energy? What is horsepower? See all questions in Power Impact of this question 1884 views around the world You can reuse this answer Creative Commons License