A Level Physics: All Exam Boards: Mechanics: Drawing and interpreting motion graphs

[@aumpatel6571]

Bruh! Thanks! My AS exams today. Was always having trouble with graphs. You saved my 3 marks out of 40

[@yall2842]

4:47 Why does the displacement time graph start at a displacement of >0?

[@burrowsphysics]

Well the position where displacement is zero is entirely arbitrary so why not start > 0 (or less than zero for that matter). You can make whatever point you like a displacement of zero (the origin) You do often see the initial position defined as the origin so having a displacement of zero but there is no rule saying it has to be and sometimes it is useful not to have the initial position = 0 displacement

[@bentright_through4936]

Is there a possibility to calculate the rate of change in acceleration

[@burrowsphysics]

Yes for sure. It doesn't have very many applications though! I believe F1 teams make use of it

[@projectmanagersk]

In the second case, where a skydiver is falling from an aircraft with air resistance, shouldn't the acceleration time graph be positive decreasing to zero?

[@burrowsphysics]

That depends which direction you define as positive. I tend to use up as positive so for me acceleration is negative

[@projectmanagersk]

@@burrowsphysics thank you for reply. Have a good day!

[@maximecj5095]

i subbed i was looojg for such a video for lomg but couldnt get one thanks alot more videos please