Graphing velocity, acceleration, and position

[banderson9]

Homework Statement

I need help graphing velocity position and time on three different graphs when obstruction is present

Relevant Equations

P1. A driver is riding along at the steady speed of 25 m/s (90 km/h) when she notices an obstruction in the road
ahead. After a reaction time of 2 s, she applies the brakes to decelerate at the rate of 2.5 m/s2

im not sure where to start

 

[kuruman]

Start by drawing the velocity vs. time first. I am not sure what you mean by graphing "time". That is normally the independent variable. Please clarify.

 

[banderson9]

im still not understanding. I understand that speed is d/t , but which time am i using; also i understand v=xf-x0/tf-t0 but what is my x value

 

[kuruman]

im still not understanding. I understand that speed is d/t , but which time am i using; also i understand v=xf-x0/tf-t0 but what is my x value

Look at the three figures showing coordinate axes in the pdf file you attached. The x-value is time in all three. The y value is acceleration, velocity and position. Have you been taught how to draw graphs?

 

[banderson9]

Look at the three figures showing coordinate axes in the pdf file you attached. The x-value is time in all three. The y value is acceleration, velocity and position. Have you been taught how to draw graphs?

not yet we are given material before we are taught, to test knowledge so i am really confused

 

[kuruman]

Do you know how to interpret line graphs? If not, see here
https://www.cuemath.com/data/line-graphs/
It's a skill that you will need to have before tackling this exercise.

 

[Lnewqban]

not yet we are given material before we are taught, to test knowledge so i am really confused

Welcome, @banderson9 !

Start by studying these:
http://hyperphysics.phy-astr.gsu.edu/hbase/mot.html#mot1

http://hyperphysics.phy-astr.gsu.edu/hbase/Mechanics/motgraph.html