/sci/ - Science & Math

Sophmore here (high school) trying to figure out the most basic and arbitrary physics problem. I just began physics the first time this year, and this is my first physics (Motion) problem that I have to solve, or rather, graph. I really don't understand how to graph the question. I don't want answers for my homework, because I know there's going to be comments like that. Just give me a hand, and yes I understand that this is pretty much preschool education for most of the people who frequent this board.

I'm expected to sketch a time-position graph. "Assume all motion is uniform and in a straight line"

A car is traveling north at a velocity of 50 km/h. It slows down to 30 km/h when it enters a school zone.

Where the fuck is the time in this? I assume that I need to average the 50 km/h because it says "Assume all motion is uniform". This is making my brain lag for some reason. I am top in my Math, Science and Socials class (Yea yea I know SS isn't a science) but for some reason this question it bugging me. Maybe I'm not eating enough fish, I don't know. All of the other problems I can graph and complete with relative ease.

Britfag engineer here, once did a job for a farm in america making specialised equipment from a plan i had been sent. Because im british i can work in feet an inches just as easily, all the software for design works in mm but its simple that 304.8mm =1ft and 25.4mm= 1inch

Anyways it all came out wrong and around £30,000 was wasted because the american who sent the design had used feet and decimal points of feet instead of feet and inches.

>>2047651