math

An iceberg breaks off from the Antarctic continent and floats due north at constant velocity/ It's latitude south decreases by 1 degree in 8 days. Taking the circumference of the earth to be 40 000km, calculate the speed of iceberg in ms^-1.

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1. Hint:
Circumference=40000km
= 40000/(2π) km
= 40000/(2π)*1000 m

angular speed, ω
= 1 degree/8 days

terrestrial speed
= rω

I get less than a metre per second.

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