Flashcards in Physics Exam terms Deck (15):
• Distance: the total length of the path an object travels. Distance is a scalar quantity (no direction).
change in an object’s position. Displacement is a vector quantity.
Points from the initial position of an object to its final position.
an object’s DISTANCE and DIRECTION from a particular reference point (ex: 24 m W of the school)
the change in distance over time (Scalar)
average velocity describes the change in position over time
change in velocity over time
pull or a push which acts upon an object as a result of the object's interaction with another object.
Force is a vector quantity. Unbalance forces can cause changes in motion.
force of gravity: force that acts on an object as a result of gravity.
Different from mass (amount of matter).
Weight changes depending on the gravitational forces whereas mass remains the same. →weight is the measure of pull of a planet
SI unit of force, named after Sir Isaac Newton (1 N = 1kgm/s2)
also known as the resultant force, the overall force acting on an object taking into account the direction in which they are acting. The vector sum of all the forces acting on an object.
a perpendicular/SUPPORT force exerted by a SURFACE on an object in contact with the surface; the normal force always points away from the surface (PERPENDICULAR)
force that results when one object makes contact with another and pushes or pulls on it
a pulling force from a rope or string.
force that opposes the motion and acts in the opposite direction of the motion or attempted motion.
Friction is exerted by the surface of an object