Query_Asst_1

course Phy 201

????h????€????assignment #001r{?j??????????Physics I

Your work has been received. Please scroll through the document to see any inserted notes (inserted at the appropriate place in the document, in boldface) and a note at the end. The note at the end of the file will confirm that the file has been reviewed; be sure to read that note. If there is no note at the end, notify the instructor through the Submit Work form, and include the date of the posting to your access page.

06-15-2006

......!!!!!!!!...................................

16:23:12

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

......!!!!!!!!...................................

RESPONSE -->

A rate is some quantity or quality dependant on another quanity or quality such as time. Velocity is a rate because it is a measurement of the change in position of an object per (dependant upon) a specific unit of time.

.................................................

......!!!!!!!!...................................

16:23:30

** 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. **

......!!!!!!!!...................................

RESPONSE -->

ok

.................................................

......!!!!!!!!...................................

16:24:28

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

......!!!!!!!!...................................

RESPONSE -->

average speed multiplied by a specified time interval will give you distance moved.

.................................................

......!!!!!!!!...................................

16:24:39

** You multiply average speed * time interval to find distance moved.

For example, 50 miles / hour * 3 hours = 150 miles. **

......!!!!!!!!...................................

RESPONSE -->

ok

.................................................

......!!!!!!!!...................................

16:26:31

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

......!!!!!!!!...................................

RESPONSE -->

Time interval is found by dividing distance moved by average speed.

.................................................

......!!!!!!!!...................................

16:29:30

06-15-2006 16:29:30

** 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. **

......!!!!!!!!...................................

NOTES -------> ok

.......................................................!!!!!!!!...................................

16:31:31

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

......!!!!!!!!...................................

RESPONSE -->

Average speed is obtained by dividing distance moved by time interval.

.................................................

......!!!!!!!!...................................

16:31:40

** 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. **

......!!!!!!!!...................................

RESPONSE -->

ok

.................................................

Good work. Let me know if you have questions.