Average Acceleration Problem checking answer

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SUMMARY

The average acceleration of a sports car that accelerates from rest to 98 km/hr in 18 seconds is calculated to be 1.5 m/s². The conversion from kilometers per hour to meters per second was performed by first converting 98 km to 98000 meters and then dividing by 60 twice to achieve the correct unit conversion. The final acceleration value was derived by dividing the converted distance by the time of 18 seconds, confirming the accuracy of the calculation.

PREREQUISITES
  • Understanding of basic physics concepts, specifically acceleration
  • Proficiency in unit conversion, particularly from km/hr to m/s
  • Familiarity with significant figures in scientific calculations
  • Basic arithmetic skills for division and multiplication
NEXT STEPS
  • Study the principles of acceleration in physics
  • Learn about unit conversions in detail, focusing on speed and acceleration
  • Explore significant figures and their importance in scientific calculations
  • Practice solving average acceleration problems with varying initial and final speeds
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Students studying physics, educators teaching kinematics, and anyone interested in understanding motion and acceleration calculations.

fattydq
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A sports car accelerates from rest to 98 km/hr in 18 s. What is its average acceleration in m/s^2?NOTE: Do NOT include units in your answer, just type in the number value!

What I did was immediately make 98 km into 98000 meters. I then took 98000 and divided it by 60 twice (once would make it m/minute, again to make it m/second) and got 27.222222. I took this final answer, divided it by 18 seconds, got 1.512345679, and changed it to 1.5 taking significant figures into account.

So would my final answer of 1.5 m/s^2 be correct?
 
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As far i as know your working looks fine:biggrin:
 

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