The acceleration of the dragster is 8.89 m/s².
To find the acceleration, the given values are,
Vâ‚€ = 85 m/s
V = 45 m/s
     [tex]\overline{a} = \frac{v - v_0}{t} = \frac{\Delta v}{\Delta t}[/tex]`
a = acceleration
v = final velocity
vâ‚€= starting velocity
t  =  time
Substituting the given values in the formula,
  a = (V-Vo)/time
    = (45-85m/s)/4.5 s.
  a = 8.89m/s².
Thus, the acceleration a of the dragster is 8.89 m/s².
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