The speed of the object expressed in centimeters per year and rounded to the nearest whole number is 28390 cm/yr
Speed per day = Distance / Number of days
Speed per day = 7 meters ÷ 9 days = 0.7778 m/day
Converting to centimeters per year :
- 1 meter = 100 cm
- 1 day = 1/365 years
Hence,
0.7778 m/day = (0.7778 × 100cm) ÷ (1/365 years)
(0.7778 × 100cm) ÷ (1/365 years) = (77.78 cm ÷ 0.0027397 year)
0.7778 m/day = 28389.7 cm / year
Therefore, the speed of the object is 28390 cm/yr
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