3) An 8 kg sled is at rest on a horizontal road. - id3812780055 от itzdulce 21.02.2021 13:44

Question

Physics: 3) An 8 kg sled is at rest on a horizontal road. The coefficient of kinetic friction between the sled and the road is 0.4. The sled is pulled a distance of 3 m by a force of 40 N applied to the sled at an angle of 30 degree. a) Find the work done by the applied force. b) Find the work done by friction. c) Find the change in kinetic energy of the sled. d) Find the speed of the sled after it has traveled 3 m.

itzdulce · Accepted Answer

B. Both are attractive force only.Explanation:Gravitational force and strong force are fundamental forces that exist in nature.Gravitational force is the force of attraction between two heavenly bodies with which  it holds them where as strong force tends to hold the subatomic particles such as proton and neutron in a nucleus. Gravitational force is implies on a long range where as Strong force has a short range as it deals with subatomic particles. Hence it is cleared both are attractive forces....

3) An 8 kg sled is at rest on a horizontal road. The coefficient of kinetic friction

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