00:01
All right, so we have a car that increases speed from v1 is 25 kilometers per hour to v2, which is 55 kilometers per hour, and does this in half of a minute, which i'm going to write as 30 seconds.
00:29
So a bicycle rider speeds up from rest to v, i'll call this a b, of 30 kilometers per hour.
00:49
That's really fast in half of a minute.
00:57
Also, so i'm going to write that as 30 seconds.
01:03
What are the magnitudes of the accelerations? well, v, how can i write t when i say v? v2 is going to equal v1 plus at for both of them.
01:30
Vb, there is no v1, that's zero, equals at here.
01:36
Now, i thought i wanted to use seconds, but i think i want to go to the other way, and instead of 30 seconds, i'll write that it's half of a minute, but then i'll divide by 60, and then i'll call it hours.
02:09
Okay, so putting this in a calculator, i'm going to write that t equals 0 .5 divided by 60.
02:22
That's going to be t1.
02:28
And then t2 is going to be, well, it's also 0 .5 divided by 60.
02:37
Okay, so they're both the same.
02:39
They're just t...