Acceleration
Rate of change in speed and/or velocity.
Friction
Rubbing force that acts against motion between two touching surfaces.
Inertia
Measures an object's tendency to remain at rest or in constant motion unless acted upon by an outside force
Motion
Change in an object's position, using starting point, ending point, reference point
Momentum
Product of mass and velocity. (quantity of motion) p=mv (momentum is conserved during a non -elastic collision)
Position
Is a reference to movement of an object
Speed
Rate of change of an object's position.
Velocity
Rate of change of displacement (speed and direction).
Balanced Forces
Forces in all directions are equal - causes no change in motion
Unbalanced Forces
Forces are not balanced - causes motion
Newton
a unit of measurement of force
Frame of Reference
the viewpoint or perspective that is used to judge motion
Reference point
the point that is used to determine motion of an object
Net Force
the overall force that is the result of two or more forces interacting on an object
Vector
used to represent any quantity that has both a number and direction, such as velocity, the magnitude of which is speed. Uses a line with arrow - the longer the line the larger the vector force (magnitude)
Force
a push or pull acting on an object; transfers energy to an object
Displacement
the shortest, straight line between where an object begins its motion and the place where it comes to rest
Distance
the total path an object takes as it moves from one location to another
Gravity
force of attraction between objects; depends on the mass and the distance between them; responsible for accelerating objects towards Earth
Kinetic energy
the energy of motion KE = 1/2mv2 (squared)
Potential energy
the energy of position; an object is not moving, but has the capacity to move GPE = m x h x g where g = 9.8 m/s2(squared)
Scalar
only include a quantity (number/magnitude) no direction.