A box is being dragged across the floor at a constant speed by a rope pulling horizontally on it. Friction is not negligible. Identify all the forces acting on the box.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.