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Water drops falling from a tap at regular intervals

This type of question, asked 3 times: 2021 Paper 14, 2021 Paper 21, 28 Jan 2026 S1. All 3 questions below, oldest first.

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  1. Question 1

    2021 Paper 14

    14
    Water drops are coming out of a tap as constant rate. A falling drop is observed at 4th 4^{\text{th~}} second after fall. Distance between that drop and next drop is 34.3 m34.3\text{ }m. Find the rate of water drops coming out of tap (drops/sec) [g=9.8 m/s2]\left\lbrack g = 9.8\text{ }m/s^{2} \right\rbrack

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  2. Question 2

    2021 Paper 21

    4
    Water drops are falling from a nozzle of a shower onto the floor, from a height of 9.8 m9.8\text{ }m. The drops fall at a regular interval of time. When the first drop strikes the floor, at that instant, the third drop begins to fall. Locate the position of second drop from the floor when the first drop strikes the floor.

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  3. Question 3

    28 Jan 2026 S1

    5
    Water drops fall from a tap on the floor, 5 m below, at regular intervals of time, the first drop strikes the floor when the sixth drop begins to fall. The height at which the fourth drop will be from ground, at the instant when the first drop strikes the ground is ____\_\_\_\_ m. ( g=10 m/s2g = 10\text{ }m/s^{2} )

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