Asks the relationship between mass and skidding distance. Provides a problem with illustrations and an answer. (YP)

Presents the LOGO computer language as a source to experience and investigate scientific laws. Discusses aspects and uses of LOGO. Lists two LOGO programs, one to simulate a gravitational field and the other projectile motion. (MVL)

This article addresses issues of orientation and mobility for students with visual impairments, including the perception of motion, visual mechanisms of binocular coordination, perception of impending collision, and body movement to avoid collision. Emphasis is on the role of binocular coordination ability and acuity. These concepts were evaluated…

Compared the spontaneous leg movements of 10 infants with Down Syndrome to those of nondisabled infants matched for chronological age and motor age. Contrary to expectations, no significant difference was found in the frequency of leg movements between the two groups. However, Down Syndrome subjects demonstrated significantly fewer of the most…

Presents three motion experiments that use magnetic switches for marking position and time involving an inclined plane, an air track, and sprinting. (JRH)

Describes a study conducted by the Children's Television Workshop that tested two forms of Sesame Street character movement (i.e., discrete movement versus continuous motion) with three-year-old preschool children using a Nintendo controller. Cognitive factors governing children's game performance and implications for designing interactive…

Discusses how teachers can introduce students to various scientific concept concerning motion, air composition, and heat by conducting an experiment: A peeled, hard-boiled egg is sucked into a bottle neck slightly smaller than the egg, after the bottle has been filled and emptied of hot water. Also discusses how students' understanding of the…

Describes a method for making a Wilberforce pendulum in which a mass at the end of a spring can vibrate up and down and also rotate about an axis collinear with the spring. Cost of production is around $15. (MVL)

Applies the concepts of kinematics and conservation of mechanical energy to calculate the time needed to reach a certain point along semicircular and parabolic paths. Presents numerical calculations for the critical speed thresholds for the paths of semicircular and parabolic curves. (JRH)

Provides a laboratory experiment using a pendulum on the conservation of energy. The activity has an easy analysis, accurate results, and is enjoyable for the students. (MVL)

Presents an exercise that attempts to correct for the common discrepancies between theoretical and experimental predictions concerning projectile motion using a spring-loaded projectile ball launcher. Includes common correction factors for student use. (MVL)

Illustrates a direct method for estimating the energy loss due to air drag on the pendulum bob and cord, starting from basic principles and using standard drag coefficients. Also shows how to hang the pendulum in a way to make it easy to evaluate the frictional losses at the support. (MVL)

Described is the use of two types of physical sensors, a motion sensor, and a light gate, which enable the microcomputer to be used as a measuring instrument for practical experiments on motion. (KR)

Described is a baton that consists of an unbreakable transparent tube with three inserted light-emitting diodes (LED) and terminal impact buffers that hold batteries and counterweights. The concepts of projectile motion and parabolic paths can be shown by analyzing the path of a thrown baton. (KR)