If more than one force acts on an object along a straight line, then the forces will reinforce or cancel one another, depending on their direction and magnitude. Unbalanced forces will cause changes in the speed or direction of an object'9s motion. All students should develop understandings about science and technology. Science and technology are reciprocal. Perfectly designed solutions do not exist.
Technological designs have restraints.
Technological solutions have intended benefits and unintended consequences. Some consequences can be predicted, others cannot. All students should develop an understanding of science and technology in society. Science influences society through its knowledge and world view. Technology influences society through its products and processes.