The physics of vertical jumping is described as an interesting illustration for motivating students in a general physics course to master the kinematics and dynamics of one dimensional motion. The author suggests that mastery of the physical principles of the jump may promote understanding of certain biological phenomena, aspects of physical…

Describes an experiment to measure the effect of air resistance on falling balls suitable for use in undergraduate physics courses. (PR)

The parallel force unit model theory, in which the buildup and decline of force in rapid responses of short duration are assumed to reflect variability in timing of several parallel force units, is presented. Predictions derived from this theory are shown to be in qualitative agreement with empirical findings. (SLD)

Explains a physics experiment on the dynamics of impact cratering. Measures the spreading velocity of the impact wave and the acoustic signal. (YDS)

Applies Newtonian mechanics in an analysis of how a swing is made to move. (GS)

Provides a physical description of motion resulting when force is applied perpendicular to the axis of rotation on a gyroscope. (SL)

Explores the basic physics behind pulling a tablecloth out from under a set of dishes, glassware, and utensils without disturbing them. Discusses terminology of Newton's laws of motion and illustrates them using three simple examples. (NB)

Responses from 159 primary teachers in the United Kingdom showed that nearly all held views of force and motion that are not in accord with Newtonian physics. Many reflect naive impetus beliefs and do not distinguish between scientific concepts, with implications for the teaching of science. (SK)

Describes a laboratory exercise to supplement or replace more traditional force table experiments, and adds real-world examples to this part of the introductory physics course. (CCM)