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Chapter 10

vocabulary words

QuestionAnswer
Speed It is the distance an object travels in a unit of time.
Average speed found by dividing the total distance traveled by the total time taken.
Instantaneous speed The speed of an object at one instant.
Velocity Speed of an object and the direction of its motion.
Acceleration Change in velocity divided by the time it takes for the change to occur.
Mass The amount of matter in an object.
Inertia The tendency of an object to resist a change in its motion.
Momentum A measure of how hard it is to stop an object, it all depends on mass and velocity.
Law of conservation of momentum The total momentum of a group of objects remains constant unless outside forces act on the group.
Meter SI unit of distance.
Kilogram SI unit of mass.
Triple-beam balance Scientific instrument used to measure mass precisely by comparing the mass of a sample to known masses.
Created by: bneace
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