calculate the amount of work done by the appropriate agent In each of the following cases a ) A workman exerts a horizontal force of 30 N to push a 12 kg table across a level floor a distance of 4m b ) A horse pulls a sled 12 m along the ground at a constant speed of 2m s against a frictional force...

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calculate the amount of work done by the appropriate agent In each of the following cases :

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calculate the amount of work done by the appropriate agent In each of the following cases :
a ) A workman exerts a horizontal force of 30 N to push a 12 kg table across a level floor a distance of 4m.
b ) A horse pulls a sled 12 m along the ground at a constant speed of 2m/s against a frictional force of 1500 N.
C) A man exerts a force of 150N parallel to a slope , to slide a 50 kg mass 8 m up the slope.