query_assign1

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01:08:18 Briefly state what you think velocity is and how you think it is an example of a rate.

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RESPONSE --> Velocity is the time it takes for an object to change its position. The speed of the object is determined by its displacement based on the length of time it takes for this displacement. The rate at which an object changes its position.

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01:08:29 ** A rate is a change in something divided by a change in something else. This question concerns velocity, which is the rate of change of position: change in position divided by change in clock time. **

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RESPONSE --> OK

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01:08:52 Given average speed and time interval how do you find distance moved?

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RESPONSE --> You multiply the average speed by the time interval. If an object was traveling 3m/s, and traveled for 9 seconds, the object would have moved 27 meters.

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01:08:57 ** You multiply average speed * time interval to find distance moved. For example, 50 miles / hour * 3 hours = 150 miles. **

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RESPONSE --> Ok.

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01:09:14 Given average speed and distance moved how do you find the corresponding time interval?

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RESPONSE --> You dividie the distance moved by the average speed to produce the corresponding time interval. If an object moved 40 meters at a rate of 5 m/s, how long would it take? 8 seconds.

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01:09:44 ** time interval = distance / average speed. For example if we travel 100 miles at 50 mph it takes 2 hours--we divide the distance by the speed. In symbols, if `ds = vAve * `dt then `dt = `ds/vAve. Also note that (cm/s ) / s = cm/s^2, not sec, whereas cm / (cm/s) = cm * s / cm = s, as appropriate in a calculation of `dt. **

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RESPONSE --> OK

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01:10:05 Given time interval and distance moved how do you get average speed?

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RESPONSE --> To get average speed, you divide the distance by the time interval. For example: if an object moved 40 meters in 20 seconds, the average speed would be 2m/s.

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01:10:14 ** Average speed = distance / change in clock time. This is the definition of average speed. For example if we travel 300 miles in 5 hours we have been traveling at an average speed of 300 miles / 5 hours = 60 miles / hour. **

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RESPONSE --> OK

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This looks good. Let me know if you have questions.