Um bloco de massa 10kg é puxado horizontalmente por uma força de 50N. O coeficiente de atrito entre o bloco e o plano horizontal de apoio é 0,25. Determine a aceleração que o objeto adquire.

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not