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A body starts with an initial velocity of 20 m/s and moves with a uniform...

Physics
WAEC 2023

A body starts with an initial velocity of 20 m/s and moves with a uniform acceleration, a, for 15 seconds. Which of the following equations represents the distance, S, traveled?

  • A. 300 + 56\(\frac{a}{2}\)
  • B. 300 + \(\frac{225a}{2}\)
  • C. 300 + \(\frac{225}{2a}\)
  • D. 300a + \(\frac{225}{2}\)
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Correct Answer: Option B
Explanation

u = 20 ms-1, t = 15 s
\(S = ut + 1/2 at^2\)
S = 20(15) + \(\frac{1}{2}× a × 15^2\)
∴ S = 300 + 225\(\frac{a}{2}\)


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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Join your school's WhatsApp group
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789