# A question about constant velocity/constant acceleration graphs?

• SoConfused__
In summary, for a D-T graph, if the velocity is constant, the line will be straight. If the velocity is changing, the line will be curved. For a V-T graph, if the velocity is constant, the line will be straight. If the acceleration is constant, the line will be straight. For an A-T graph, if the acceleration is constant, the line will be straight.f

#### SoConfused__

Hey! For a lab, I have to make a few graphs, I just need some clarification.

Please correct me if I'm wrong.

For a D-T graph, where velocity is constant, the line will be straight. (Diagonal.)
For a V-T graph, where velocity is constant, the line will be straight. (Horizontal)
^ Confused about this though, at point 0 what will the y value be? (For example, if the velocity is 3m/s)
For a A-T graph, where velocity is constant, there will be NO line. (No acceleration)

For a D-T graph, where acceleration is constant, the line will be curved.
For a V-T graph, where acceleration is constant, the line will be straight. (Diagonal)
For a A-T graph, where acceleration is constant, the line will be straight. (Horizontal)??
^ For this one I am also confused.

I just need to know if I'm on the right track!
Ones in bold are the one I'm not sure are correct.

Thank you very much for reading! I appreciate any help that is offered. =)

Hey! For a lab, I have to make a few graphs, I just need some clarification.

Please correct me if I'm wrong.

For a D-T graph, where velocity is constant, the line will be straight. (Diagonal.)
For a V-T graph, where velocity is constant, the line will be straight. (Horizontal)
^ Confused about this though, at point 0 what will the y value be? (For example, if the velocity is 3m/s)

The horizontal line will be above the horizontal axis at a distance equal to 3m/s on the scale.
For a A-T graph, where velocity is constant, there will be NO line. (No acceleration)
The line will be horizontal and along the axis where a=0.
For a D-T graph, where acceleration is constant, the line will be curved.
For a V-T graph, where acceleration is constant, the line will be straight. (Diagonal)
For a A-T graph, where acceleration is constant, the line will be straight. (Horizontal)??
^ For this one I am also confused.
The horizontal line will be above the x-axis for positive acceleration and below it for negative acceleration.
You are on the right track.

This might help
http://www.bbc.co.uk/scotland/learning/bitesize/higher/physics/mech_matt/analyse_motion_rev1.shtml

thank you for all your help :)