NLN PAX Physics Exam (Answerd) Verified Solution

NLN PAX Physics Exam (Answerd) Verified Solution Displacement Distance that an object is from some starting point, and it is measured in units of length. Motion when an object is in motion, it's displacement is constantly changing. -Velocity (speed) -Acceleration Speed Is the distance traveled by an object per unit of time. - Speed equals distance traveled over time. Velocity Speed in a given direction; it therefore tells us two things about a moving object, it's speed and direction. Acceleration Rate of change in velocity Deceleration Negative acceleration, or a decrease in velocity and can cause a change in direction. Momentum equal to the mass of an object multiplied by its velocity. -Momentum = mass X velocity. Conversion of momentum States that the total momentum of an isolated system is always constant. Newton's First law Law of inertia, states that objects in motion tend to stay in motion and that objects at rest tend to stay at rest. Inertia Property of matter that resists any change in motion. Newton's Second Law Describes the relationship between force, mass and acceleration. Force applied on an object equals the mass of the object time it's acceleration. -Force= mass x acceleration ( or f= ma) Newton Is the unit that represents a force that accelerates a mass of 1 kilogram 1 meter per second. Gravity force of attraction between all objects in the universe. Weight The pull of gravity on an object. Density Which is mass per unit volume -Density = mass over volume. Torque Perpendicular force times the lever arm.