Velocity squared vs position graph

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SUMMARY

The discussion centers on the interpretation of the slope from a velocity squared versus position graph. The slope, calculated from a best fit line, represents twice the acceleration (2a), as derived from the equation v² = u² + 2as. The units of the slope are in cm/seconds², which indicates that the acceleration can be derived from this slope. The confusion arises from the distinction between displacement (s) and time (t), clarifying that s refers to position, not time.

PREREQUISITES
  • Understanding of kinematic equations, specifically v² = u² + 2as
  • Familiarity with graph interpretation in physics
  • Knowledge of units of measurement in physics (e.g., cm/s², m/s²)
  • Basic concepts of acceleration and displacement
NEXT STEPS
  • Research the derivation and application of kinematic equations in physics
  • Learn how to plot and interpret graphs of motion, specifically velocity and position
  • Study the relationship between acceleration and the slope of velocity squared versus position graphs
  • Explore unit conversions between cm/s² and m/s² for better understanding of acceleration
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Students studying physics, educators teaching kinematics, and anyone interested in understanding the relationship between velocity, position, and acceleration in motion analysis.

azn4lyf89
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I calculated a slope from a best fit line of a velocity squared vs position graph but I don't understand what this slope represents. My units come out to be in cm/seconds squared, so does that mean that's my acceleration? It seems to be way off from 9.80m/sec^2 which should be my acceleration. Or does this slope help me determine to acceleration?
 
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Well from v^2=u^2+2as

If you plot v2 vs. s, your gradient should be 2a
 
rock.freak667 said:
Well from v^2=u^2+2as

If you plot v2 vs. s, your gradient should be 2a

Isn't that only if the graph was velocity squared vs time? Because s is seconds right?
 
azn4lyf89 said:
Isn't that only if the graph was velocity squared vs time? Because s is seconds right?

s is displacement.

t is usually used to inidicate time.
 

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