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A body undergoes acceleration when there is a change in its state of motion

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1. In.5 seconds a projectile goes from 0- 300m/s. What is the acceleration of the projectile? 2. The space shuttle releases a telescope into orbit around the earth. The telescope goes from being stationary to traveling at a speed of 1700 m/s in 25 seconds. What is the acceleration of the satellite?

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1. 600 m/s 2 2. 1700/ 25 = 68 m/s 2

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Velocity vs. Time Graphs

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At Rest

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Constant Velocity

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Acceleration= Increasing Velocity

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Negative Acceleration= Decreasing Velocity

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Acceleration is directly proportional to net (or unbalanced) force.

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How do mass and force affect the acceleration of an object?

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As one thing gets bigger so does the other!

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The amount of matter in an object The measure of the inertia (laziness) of an object

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Volume: how much space it takes up Weight: a measure of the force of gravity

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F = force m = mass a = acceleration SI Units of Newtons (N) SI Units of Kilograms (kg) SI Units of m/s 2 F=ma

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Force and Acceleration Interactions

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Newton’s Second Law can be expressed with an equation: Which can be re-arranged to isolate Force like this:

Newton’s Second Law can be expressed with an equation: Which can be re-arranged to isolate Force like this:

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