One boat tows another boat by means of a tow line, which is under a constant tension of 450 N. The boats move at a constant speed of?
2019-02-25 11:53 pm
One boat tows another boat by means of a tow line, which is under a constant tension of 450 N. The boats move at a constant speed of 4.75 m/s. How much work is done by the tension in 1.10 min?
回答 (1)
2019-02-26 12:00 am
Work done
= F s
= (450 N) × (4.75 × 1.10 × 60 m)
= 141000 J (to 3 sig. fig.)
= 141 kJ
= F s
= (450 N) × (4.75 × 1.10 × 60 m)
= 141000 J (to 3 sig. fig.)
= 141 kJ
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