A piston-engine dragster set a world record by starting from rest and hitting a top speed of 244 mi/h over a measured track of 440 yd. Compute its average acceleration in m/s^2.(adsbygoogle = window.adsbygoogle || []).push({});

I assumed the acceleration to be constant in order to find t using this formula : v_av = 1/2(v_i + v_f).

After that used this one : a= deltaV/deltaT.

My answer is 15 m/s^2 but the answer given in the text book is 18 m/s^2.

What's wrong? My assumption?

Thanks

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# Homework Help: Dragster average acceleration

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