Learning Task 1 UNIFORMLY ACCELERATED MOTION: HORIZONTAL...

Learning Task 1 UNIFORMLY ACCELERATED MOTION: HORIZONTAL DIMENSION If a body maintains a constant change in its velocity in a given time interval along a straight line, then the body is said to have a uniform acceleration TABLE1: Data on the Motion of a Rolling Tin Can Distance, d (cm) | Time, (s) t | Time² t² (s²) 40 | .15 s | 80 | .30s | 120 | .45s | 160 | .60s | 200 | .75 s | Answer the activity based on the data on the table. 1. Calculate the t² ( by multiplying by itself / squared) and write your answer on the table above. 2. Graph distance(d) vs. time (t) then d vs t² d - y axis t / t² - x axis Distance (cm) time (s) Distance (cm) Time² (s²)

Transcript

00:01 Okay, so we're given a data table here of distance versus time, and we're asked to calculate values for time squared.

00:07 So what i'm going to do is take each of these numbers and square them on my calculator.

00:11 So 0 .15 squared would be 0 .02 .0 .2.

00:21 Okay, do the same thing for the other values.

00:23 0 .3 squared is going to be 0 .09 .45 squared is 0 .2025 squared is 0 .2025.

00:38 0 .36, and 0 .5625.

00:46 Okay, so those are your time squared.

00:48 You could round them to two significant figures if you wanted to, as is shown in most of these measurements here for time.

00:56 Then we're gonna plot a graph.

00:57 So there's two graphs that we're gonna plot.

00:59 For the first one, we're gonna do distance versus time and then distance versus time squared.

01:04 So the times range from 0 to 0 .75.

01:08 So this will be 0 .1 .1.

01:11 Point two point three point four point six point seven point eight so something like this would be a good scale to use and the distances go from zero to two hundred so twenty forty sixty eighty one hundred x not i'm gonna have space actually oh i didn't do this right that's why sorry let's fix that so forty sixty this would be 80, 100, let's see here, 100, 120.

01:51 This would be 160 and then 200.

01:53 Okay, i thought i had enough space there.

01:56 Okay, so we're going to plot these points.

01:58 This is going to be our x value.

02:00 This is going to be our y value.

02:01 So 0 .15, 40 is right there over 0 .15, up 40.

02:09 0 .380.

02:11 0 .3 is right there.

02:12 80 is right there.

02:14 0 .45 and 120 is going to be about right there.

02:20 0 .6 and 160 is right there.

02:28 And then lastly, 0 .75 and 200 is right there.

02:33 Now it's hard to tell if this is, it actually looks pretty linear almost...

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