Motion+and+Forces

The Big Idea: // The motion of an object can be described and predicted. // // ﻿ // Key Concept 1.1: // An object in motion changes position. // media type="custom" key="10420884"
 * Chapter 1- Motion **

Key Concept 1.2: //Speed measures how fast position changes.// media type="custom" key="10376086"

Key Concept 1.3: // Acceleration measures how fast velocity changes. // Remember-- //acceleration is a vector, so it has both size (could be speed) and direction. These three collisions// //demonstrate acceleration's role in motion.//

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 * 1. Acceleration in the direction of the motion = object speeds up **

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 * 2. Acceleration in the opposite direction of the motion = object slows down **

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 * 3. Acceleration at a right angle to the direction of the motion = object changes direction **

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