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# Motion and Momentum

### Motion/Momentum Grade 8 Science Vocabulary - LMS

What is ACCELERATION? The rate at which an object changes its velocity; occurs when an object speeds up, slows down, or turns.
What is INERTIA? The tendency of an object to resist a change in its motion.
What is the LAW OF CONSERVATION OF MOMENTUM? States that the total momentum of objects that collide with each other is the same before and after the collision.
What is MASS? The amount of matter in an object.
What is MOMENTUM? A measure of how difficult it is to stop a moving object.
How do we find the SPEED of an object? Distance Traveled/Time of Travel
What is VELOCITY? The speed and direction of a moving object.
What is INSTANTANEOUS SPEED? The speed of an object at one instant in time.
What is DISPLACEMENT? The distance between the STARTING and ENDING points and the DIRECTION in which you travel. It is often the SHORTEST distance between two points.
How do we find the MOMENTUM of an object? (What is the formula?) Mass x Velocity
What is the FORMULA for ACCELERATION? Change in Velocity/Time
How do we find the AVERAGE SPEED of an object? (What is the formula?) Total Distance/Time Traveled
What does AVERAGE SPEED mean? The average of all instantaneous speeds.
What does SPEED mean? How fast an object is moving or the rate at which an object covers distance.
Created by: tannis