Welcome to our Glossary Once you find the meaning of the word you need, just click on the link to go back to the page you were working on. Axis-a straight line through an object on which the object can spin Back to YoYo Centrifugal Force moving or acting in a direction away from the center or axis like when you spoin a bucket of water on a rope around you, the water goes away, or toward the bottom of the bucket Back to Toys in Space Centripetal Force the accelaeration of a body in motion, moving toward the center of an axis, the opposite of centrifugalBack to Toys in Space Diagonally- in a slanted direction. Back to YoYo Force-anything that changes the speed or direction of an object. Back to YoYo Gyroscopic stability - a spinning object that does not want to change its plane of spin. It has to do with mass and inertia Back to YoYo Horizontal - something that moves in a plane at right angles to a radius of the earth. (Newton's 1st law of motion) Back to YoYo Inertia-principle that states that a body at rest resists being moved. Back to YoYo Mass-a property of matter which is the measurment of the amount of matter a body contains Back to YoYo Newton's Law of Motion-a body at rest wants to stay at rest, an object in motion tends to stay in motion in a straight line unless acted on by an external force. Back to Toys in Space Physics-the science of the interaction of matter and energy, using measurment and mathematics Back to Home Page Plane of spin-the plane on which the axis of an object is spinning on Back to YoYo Surface tension-the tendency of liquid molecules to attract each other -they form a curved surface first rather than spilling or breaking apart Back to Bubbles Vertical- something that is straight up and down, to ninety degrees of horizontal Back to YoYo Work -the energy when a force is used to move something through a distance -work = force times distance Back to Home Page