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Q: A ball thrown vertically upward returns to the ground in 13.5 seconds. At what speed was he thrown. (g = 10ms⁻²)
  • A. 67.5 m/s
  • B. 13.5 m/s
  • C. 10 m/s
  • D. 135 m/s
Correct Answer: Option A -
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Explanations:

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