A rock is attached to the left end of a uniform meter stick that has the same mass as the rock. How far from the left end of the stick should the triangular object be placed so that the combination of meter stick and rock is in balance?

moving ball hits still ball. mover stops, hit ball moves. momentum transfer.

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

b. preoperational

just took it

answersysvol bloat;