The runners ran on a 1-mile circle track, 5 times around in 1 hour and stopped 20 feet from the starting point . What is the velocity

Question

geerky42 · Answer

$velocity = \dfrac{displacement}{time}$

Displacement mean "distance" from starting position to final position.

geerky42 · Answer

Displacement is distance from start point and final point, which is 20 feet.

Does that make sense?

geerky42 · Answer

@DarkBlueChocobo ?

darkbluechocobo · Answer

sorry im back

darkbluechocobo · Answer

@geerky42  yes that makes sense

geerky42 · Answer

Yeah, so just 20ft / 1hr. Simple lol.

darkbluechocobo · Answer

you jsut had to find the displacement?

geerky42 · Answer

It is already given. "stopped 20 feet from the starting point"

darkbluechocobo · Answer

So question on this one The car drove 100 km on a windy road to a city 80 km away in two hours. find the velocity would the displacement be 20?

geerky42 · Answer

ohh, now this question makes sense. 

No, displacement is 80km, because where car started, the city is 80km away. so displacement is 80km, regardless of how windy road is.

geerky42 · Answer

Took him two hours to get there, so you have 80km / 2 hr

geerky42 · Answer

If you were asked for speed, then you would need to know distance, which is 100km

darkbluechocobo · Answer

ohhh ok. so just since the city is 80 km away the windy ness doesnt matter or the distance it took to get there?

geerky42 · Answer

For distance, it does matter. 

Basically distance is how much you travelled.

Displacement is just how long between starting point and final point.

darkbluechocobo · Answer

alright so in this case it would be 80/2 to find the velocity?

geerky42 · Answer

Yeah

darkbluechocobo · Answer

alright thanks again :D

geerky42 · Answer

Welcome, I take that you are currently taking physics?

darkbluechocobo · Answer

Yes i am

darkbluechocobo · Answer

I decided to take precal and physics in the same year im still deciding if my decision was good

geerky42 · Answer

You said you are planning to study engineering or something, right? Physics and calculus are good things to know for engineering.

darkbluechocobo · Answer

Yes i plan on it :p Computer engineering

geerky42 · Answer

oh, yeah, then you did make good decision, I believe.

darkbluechocobo · Answer

:3 yay

geerky42 · Answer

Senior, right?

darkbluechocobo · Answer

Yups

geerky42 · Answer

Oh cool. just asking. See you around :)

darkbluechocobo · Answer

Alright :p