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a force of 16N applied 4.0kg block that is at rest on a smooth, horizontal...

Physics
JAMB 1983
a force of 16N applied 4.0kg block that is at rest on a smooth, horizontal surface. What is the velocity of the block at t = 5 seconds?
  • A. 4ms-1
  • B. 10ms-1
  • C. 20ms-1
  • D. 50ms-1
  • E. 80ms-1
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Correct Answer: Option C
Explanation
F = ma

= \(\frac{m(u - v)}{t}\)

16 = \(\frac{4(v - 0)}{5}\)

v = 20ms-1
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WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
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WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
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