00:01
Question 2 .2.
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The particle moves according to the equation x equals 10 t squared where t is in seconds and x is in meters.
00:16
We want to find the average velocity from 2 to 3 seconds.
00:20
Let's remember average velocity is.
00:23
So average velocity is equal to the final position minus the initial position divided by the change in time.
00:36
Okay, and average velocity is a vector, so it could be positive or negative.
00:45
Okay, so from two seconds to three seconds, so we're basically doing x of three seconds minus x at two seconds, divided by the difference in time, well, it's just one second, right? so, x of three seconds is just plug that in, so it's 10 times three seconds squared.
01:11
Minus 10 times 2 seconds squared, divided by 1...