Answer :

dsdrajlin

Answer:

-3.1 m/s²

Explanation:

Given data

  • Initial speed (v₀): 20 m/s
  • Final speed (vf): 0 m/s (the automobile stops)
  • Elapsed time (t): 6.5 seconds
  • Acceleration (a): to be determined

We can determine the acceleration of the automobile using the following kinematic expression.

a = Δv / t

a = vf - v₀ / t

a = (0 m/s - 20 m/s) / 6.5 s

a = -3.1 m/s²

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