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If a car starts from rest and moves with a uniform acceleration of 10ms-2 for...

Physics
JAMB 1985

If a car starts from rest and moves with a uniform acceleration of 10ms-2 for ten seconds, the distance it covers in the last one second of its motion is
  • A. 95m
  • B. 100m
  • C. 500m
  • D. 905m
  • E. 1000m
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Correct Answer: Option A
Explanation
Distance in 105, using, x = ut + \(\frac{1}{2}\)at2

x = (0 x 10) + (\(\frac{1}{2}\) x 10 x 10 x 10) = 500m

distance in 9s; x - (0 x 9) + (\(\frac{1}{2}\) x 10 x 9 x 9) = 405m

distance in last is = difference

= 500 - 405

= 95m

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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