Details Title: Ch. 4-5 Vocab Description: forces Total Flash Cards: 22 Created: 10/08/2007 19:16:18		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Physics Flashcards
Cards in this set: Term force Definition push/pull on object causing change in motion; has magnitude and direction Term free-body diagram Definition physical model representing forces acting on a system Term net force Definition vector sum of all forces on an object Term Newton's second law Definition acceleration of object proportional to net force and inversely proportional to mass of accelerating object Term Newton's first law Definition object at rest stays at rest, object in motion stays in motion in straight line at constant speed if net force on object is zero Term inertia Definition tendency of object to resist change Term equilibrium Definition net force on object is zero Term apparent weight Definition force experienced by object from all forces acting on it, giving object acceleration Term weightlessness Definition object's apparent weight of zero from no contact forces pushing up on it Term drag force Definition exerted by a fluid on object moving through it; depends on object's motion and properties and the fluid's properties Term terminal velocity Definition constant velocity of object reached when drag force equals force of gravity Term interaction pair Definition pair of forces equal in strength but opposite in direction Term Newton's third law Definition all forces come in pairs and act on different objects and equal in strength and opposite in direction Term tension Definition force exerted by a rope/string Term normal force Definition perpendicular contact force exerted by a surface on another object Term components Definition projections of the component vectors Term vector resolution Definition process of breaking a vector into its components Term kinetic friction Definition force exerted on one surface by a second surface when the two surfaces rub against each other because one or both of the surfaces has motion Term static friction Definition force exerted on one surface by second surface with no motion between the two surfaces Term coefficient of kinetic friction Definition slope of line between two surfaces, relating frictional force to normal force Term equilibrant Definition force placing object in equilibrium; same magnitude as resultant but opposite in direction Term coefficient of static friction Definition dimensionless constant depending on 2 surfaces in contact; used to calculate maximum static frictional force that needs to be overcome before motion begins