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1. (6] An iceboat on a smooth frozen lake is pushed along by a wind that applies a constant force F to the sail on the boat.

please use theories/procedure that come from the dynamics section of hibbelers textbook

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Answer #1

Work done will be equal to the change in net kinetic energy of the boat i.e. conservation of energy.

In first case 9 times of initial work is need to be done to achieve 3v speed of boat.

And in case two, change in kinematic energy of both the boats will be same, because both have same force applied and same distance to travel.

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