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أنواع العجلة فيزياء الصف الاول الثانوى المطور 2014

27072013
أنواع العجلة فيزياء الصف الاول الثانوى المطور 2014

أنواع العجلة فيزياء الصف الاول الثانوى المطور 2014
In this slow motion video for IPS Schools by Clayborn a ball is released on an inclined plane and accelerates due to the force of gravity. At the bottom of the first inclined plane to the beginning of the second inclined plane the ball stops its positive acceleration by nearly maintaining its horizontal speed. On the second ramp the ball accelerates backwards down the slope, or loses speed to a point where it momentarily comes to rest. Therefore this video demonstrates POSITIVE ACCELERATION, ZERO ACCELERATION, AND NEGATIVE ACCELERATION (or acceleration in the oposite direction. This video ignores friction and wind resistance and was intended for basic illustration of acceleration).


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