Calculating Horse Speed: Average Acceleration

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SUMMARY

The discussion centers on calculating the time it takes for a horse to decrease its velocity from 12 m/s to 7 m/s with an average acceleration of -1.79 m/s². The correct formula to use is the average acceleration equation: a_{average} = (V_f - V_i) / Δt. The solution derived indicates that the time required is 2.8 seconds, achieved by manipulating the acceleration and initial velocity values. Participants clarified the correct application of the formula to reach the solution accurately.

PREREQUISITES
  • Understanding of kinematic equations
  • Familiarity with average acceleration concepts
  • Basic algebra skills for solving equations
  • Knowledge of initial and final velocity definitions
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  • Study the kinematic equations in physics
  • Learn about negative acceleration and its implications
  • Practice solving problems involving average acceleration
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This discussion is beneficial for physics students, educators, and anyone interested in understanding motion dynamics and acceleration calculations.

justin32089
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Homework Statement



Running with an initial velocity of 12 m/s, a horse has an average acceleration of -1.79 m/s^2

How long does it take for the horse to decrease its velocity to 7.0m/s ?

Homework Equations


The Attempt at a Solution


ok i got the answer is 2.8 seconds however i got there by adding -1.79 to 12 twice then figuing out the fraction of -1.79 needed to get the velocity down to 7.0.

i was wondering the correct way to do this as it has stumped me
thank you
Justin
 
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[tex]a_{average} = \frac{V_f - V_i}{\Delta t}[/tex]
 

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