Converting d-t graph to v-t graph

[martinlhc]

Homework Statement
hi everyone. i am a student studying in hong kong and i have problems when i am preparing for my studies in this summer vacation. My tutorial lesson teacher gave me this graph and told me to convert it to a v-t graph.

i have done several steps and i am wondering if i am having a good start. Can you draw me a correct answer over here? I am really grateful for your help! Thanks!


*(A,B,C,D,E,F,G) are just points, they can be ignored.

 

[pgardn]

There is a problem on your c-d pencil line on what I assume is your velocity v. time graph.

It also looks like you have an S written on the y-axis of the graph drawn in pencil?

This also probably belongs in the introduction to physics section. I don't know if the moderators move these threads.

 

[martinlhc]

in hong kong we called d-t graphs as s-t graphs (as i know)

sorry that's wrong. the graph below is a v-t graph

 

[pgardn]

ok then...

Do you see what is wrong with the c to d line drawn on your s-t graph?

s for speed... ?If it really is a v-t graph, then the slope is important, it indicates direction.

 

[pgardn]

ok then...

Is the slope of your d-t graph + or - in the c-d time frame?