3) A worker tries to push a boy with mass 20 kg across a horizontal surface. The coefficient of static friction between

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3 A Worker Tries To Push A Boy With Mass 20 Kg Across A Horizontal Surface The Coefficient Of Static Friction Between 1 (212.74 KiB) Viewed 41 times

3) A worker tries to push a boy with mass 20 kg across a horizontal surface. The coefficient of static friction between the box and the Sunrace is 0.40. The coefficient of kinetic friction between the DOK and the surface is 0.25. a 3 pts) What minimum fore the worker push within order start the box moving? b - 4 pts) Once the box starts moving, what force should the worker push with to keep the box moving at constant speed? C-4 pts) If the worker instead continues pushing with the same force as calculated in part a), what will be the acceleration of the box? d - 4 pts) if the worker instead continues pushing with the same force as calculated in part a), how far will he move the box in 3.0 s?!