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# Acceleration

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### Acceleration

1. 1. Direction of acceleration due to gravity vectors
2. 2. <ul><li>* </li></ul>Acceleration due to gravity is a vector quantity.
3. 3. <ul><li>Vectors can be represented by an arrow to show magnitude and direction </li></ul>
4. 4. <ul><li>On your whiteboards, draw the direction of acceleration for the following objects. </li></ul><ul><li>The dashed line represents its path. </li></ul><ul><li>* not drawn to scale </li></ul>
5. 5. #1. A pebble dropped from a bridge <ul><li>* </li></ul>Answer
6. 6. #1. A pebble dropped from a bridge <ul><li>* </li></ul>The vector is oriented down.
7. 7. #2. A baseball tossed up in the air, halfway up the path <ul><li>* </li></ul>Answer
8. 8. #2. A baseball tossed up in the air, halfway up the path <ul><li>* </li></ul>The vector is oriented down.
9. 9. #3. A baseball tossed up in the air, at the top <ul><li>* </li></ul>Answer
10. 10. #3. A baseball tossed up in the air, at the top <ul><li>* </li></ul>The vector is oriented down.
11. 11. #4. A baseball tossed up in the air, right before it strikes the ground <ul><li>* </li></ul>Answer
12. 12. #4. A baseball tossed up in the air, right before it strikes the ground <ul><li>* </li></ul>The vector is oriented down.
13. 13. #5. A football is thrown at a 45 0 angle, at the top of its path <ul><li>* </li></ul>Answer
14. 14. #5. A football is thrown at a 45 0 angle, at the top of its path <ul><li>* </li></ul>The vector is oriented down.
15. 15. #6. A cannonball rolling off a table <ul><li>* </li></ul>Answer
16. 16. #6. A cannonball rolling off a table <ul><li>* </li></ul>The vector is oriented down.
17. 17. <ul><li>What can you summarize about the direction of the vector representing acceleration of all these objects? </li></ul><ul><li>What are other examples? </li></ul>
18. 18. <ul><li>The rock pebble football and all have different masses. How does this affect the magnitude of the acceleration vectors? </li></ul><ul><li>On Earth, what would its magnitude be? </li></ul>