Discover the science of fun with this classic study of kinetic energy and Newton's law. Makes a great desktop distraction of learning gift. Made of plastic. 4.5" T. x 4" W. 12 pieces per unit.
Discover the science of fun with this classic study of kinetic energy and Newton's law. Makes a great desktop distraction of learning gift. Made of plastic. 4.5" T. x 4" W. 12 pieces per unit.
