Assignment2

course Phy 201

out in the multiplying.confidence assessment: 3

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00:05:19

** 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

self critique assessment: 3

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00:06:47

Given average speed and distance moved how do you find the corresponding time interval?

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RESPONSE -->

Divide the average speed by the distance moved. Example: 60mph/60 m=1 hour.

confidence assessment: 3

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00:07:59

** 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

self critique assessment: 3

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00:09:37

Given time interval and distance moved how do you get average speed?

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RESPONSE -->

Distance traveled divided by time interval. Example:

60 miles in 1 hour = (60miles/1hour)=60mph

confidence assessment: 3

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00:09:48

** 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

self critique assessment: 3

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Very good work. Let me know if you have questions. &#