Question Pre-LEPAK [LEPAK Chapter 7: Gravitation]

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NOTICE:
For Q1b (iii), the mass and radius of Earth are revised to be 6.38 × 10⁶ m and 5.97 × 10²⁴ kg respectively. The change in the speed will therefore be 3.22 × 10³ m s⁻¹. Therefore, do use the updated value to answer the question.
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