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11. A weightlifter presses a 400N weight 0.5m over his head in 2s. What is the power of the weightlifter?
a. 100W b. 25W c. 100N d. 400W

12. How much power is required to do 180J of work in 2.4s?
a. 75W b. 430W c. 178W d. 7.5W

13. How much power is required to lift a 30N chair, as high as 0.20m in 2s?
a. 15W b. 1.0W c. 3.0W d. 7.0W

14. How much power is required to raise a 30 kg crate a vertical distance of 6m in a time of 4 seconds?
a. 441 watt b. 52.5 watt c. 45 watt d. 385 watt

paki sagot po need ko ngayon mamaya na pasahan​