Thu February 24, 2011 By: Tana Mangrulkar

Can You Plz. Explain Me The Graphs For Motion in Straight Line In Brief including position time,velocity time and acceleration time with sign conventions

Expert Reply
Fri February 25, 2011
Dear student,

raphical representation of the motion of a body plotted on the x-axis and velocity on the y-axis. In the velocity-time graph, acceleration of the body is obtained from the gradient of the curve. The area beneath the graph represents the distance travelled.


The position-time graph for constant velocity is a straight line


The slope of a position-time graph is the velocity of the object.


The area under a velocity-time graph gives the displacement during that interval, or,


Δd = vΔt

On a position-time graph, a negative slope corresponds to a negative velocity. If forward is positive, then backward is negative.
The velocity-time graph for constantacceleration is a straight line.
the slope of a velocity-time graph is acceleration.

The position-time graph for constant

acceleration is curved (parabolic)

Hope this helps.
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