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The joule is equivalent to?

Physics
WAEC 2022

The joule is equivalent to?

  • A. Kg m\(^{2}\) s\(^{-1}\)
  • B. Kg\(^{2}\) m s\(^{-2}\)
  • C. Kg m\(^{2}\) s\(^{-2}\)
  • D. Kg m s\(^{-1}\)
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Correct Answer: Option C
Explanation

Joule as the unit of work done or energy used.

Force = mass × acceleration
 Work = Force × Distance
 Work = mass x acceleration x distance

Joule = kg × \(\frac{m}{s^2}\) × m

→ kg m\(^2\) s\(^{-2}\) 


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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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