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Express 130 kilometers per second in meters per hour

Mathematics
JAMB 1982

Express 130 kilometers per second in meters per hour

  • A. 7.8 x 10-5
  • B. 4.68 x 106
  • C. 7,800,000
  • D. 4.68 x 108
  • E. 7.80 x 105
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Correct Answer: Option D
Explanation

1km = 1000m

60sec. = 1 mins

60 mins. = 1 hr

130000m per sec = 130000 x 3600

= 468000000m/hr

= 468 x 108 m/hr


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