| Module 7 - Answers |
| Lesson 1 |
| Answer 1 |
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7.1.1
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| Answer 2 |
| 7.1.2 The book fell faster during the subinterval from t = 0.16 to t = 0.28. |
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| Lesson 2 |
| Answer 1 |
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7.2.1
Average velocities: –2.1 m/s; –1.933 m/s; –1.75 m/s
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| Answer 2 |
| 7.2.2 The best approximation is –1.75 m/s, which is the average velocity for the interval (0.16, 0.716) to (0.18, 0.681). It best approximates the instantaneous velocity because the elapsed time interval is the smallest of the three. |
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| Answer 3 |
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7.2.3
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| Lesson 3 |
| Answer 1 |
| 7.3.1 –1.64509 m/s; –1.64914 m/s; –1.64955 m/s |
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| Answer 2 |
| 7.3.2 Yes. This average velocity is also –1.6496 m/s, which is equal to the instantaneous velocity. |
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| Self Test |
| Answer 1 |
 The ball averaged approximately 0.6 m/s over the interval from t = 0.16 to t = 0.48, traveling in an upward direction. |
| Answer 2 |
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| Answer 3 |
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2.1401 m/s
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| Answer 4 |
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| Answer 5 |
| 2.1447 m/s |
| Answer 6 |
| 2.1447 m/s; The ball was traveling approximately 2.1447 m/s at t = 0.16 in an upward direction. |
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