We already developed a view control function for VR–based learning support system. The view control has features of simplicity, reality, and natural sense to body movement. Using the function, learners can view an object from the viewpoint according to their moving. Though the device for the view control is hand–free mouse and basically developed to aid disabled person, the price is reasonable and it is easy to treat. Now we are developing VR–based learning support system as an application of the view control function. The application is a motion of falling objects in elementary mechanics. There are two features in the system. One is games which linked to body movement and the other is reuse of the device. As a result of repetition the natures of the game get acquired knowledge to be established. The linkage of bodily movement gets a learner to understand the continuity of motion phenomena through his/her experience. And the novelty of the system exists in the new use of existing device in order to learn elementary mechanics. This paper discusses a system for the basic law of the falling object motion by horizontal cast and an experiment using it.
