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A rocket burns 0.01kg of fuel each second and ejects it as a gas with...

Physics
JAMB 1982
A rocket burns 0.01kg of fuel each second and ejects it as a gas with a velocity of 5,000m/s. What force does the gas exert on the rocket?
  • A. 500,000N
  • B. 500N
  • C. 50N
  • D. 5,000N
  • E. 50,000N
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Correct Answer: Option C
Explanation
F =\(\frac{m(v - u)}{T}\)

= \(\frac{0.01(5000 - 0)}{1}\)

= 50N
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WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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