00:03
In this question we have a horse that was walking away from his trainer and traveled a distance x equal 38 meter in 9 seconds.
00:24
And then he gallops back halfway.
00:32
So half of 32 is 19, right? 19 meter and it took him and he did that in 1 .8 seconds and the questions and the question told us that the direction away from the trainer is the positive direction so in a they want to be speed the average speed of the horse so we know the average speed is nothing but the distance it traveled total distance traveled over the time it took to travel that distance so the total distance traveled here is in the going is 38 the coming back it's 19 so 38 plus 19 that will be in meters divide by the total time it took to travel this distances it's 9 plus 1 .8 seconds so together that's 10 .8 second and and the answer going to be 5 .3 meter per second.
01:44
All right.
01:46
For part to be, they're asking us to find the average velocity.
01:57
Now remember, velocity is a vector, so you have to indicate the direction when you're done.
02:03
And velocity, unlike speed, it's not the distance level, but it is the displacement that's been made.
02:10
So the displacement made divide by the time it took to make that displacement.
02:19
So he won 38 starting point was here.
02:25
He traveled 38 and then he came back halfway...