. . . "Juvenile works" . . "An overview of what forces are and how they affect the way we live, describing such forces as gravity, pressure, balanced and unbalanced forces, and motion on a curve. Suggested level: intermediate, junior secondary." . . . . . . "An overview of what forces are and how they affect the way we live, describing such forces as gravity, pressure, balanced and unbalanced forces, and motion on a curve." . . "Under pressure : forces" .