a car is traveling at 70mph when the breaks are applied. the car comes to stop in 75 meters. What is the speed of the car(in mph) after the first one-third of the stopping time

Question

theeric · Answer

Hi! Have you tried to find a solution yet?

theeric · Answer

What I think you should consider first is that the car is $\sf slowing\ down$, so it is $\sf changing\ its\ velocity$. Does that help at all?

What is a change in velocity? You're changing your velocity over a know $\sf distance$. Do you have any equations that have a $\sf change\ in\ velocity$ and $\sf distance$ involved?

That would be a good place to start, I think.

And then you have to know how the $\sf velocity\ changes$ in a certain amount of $\sf time$. Do you have any equation for that, maybe?

theeric · Answer

Good luck! I might not be on later, but you should ask questions and bump the question as you need to!