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A body covers 12 m in 2nd second and 20...

A body covers `12 m` in ` 2nd` second and `20 m` in `4 th second` . Find what distansce the body will cover in ` 4 second` agter the ` 5 th second`.

Text Solution

Verified by Experts

Distance coverd in ` 4 ceconds after the fifth second ` = S_9 - S_5`. The distance covered in (t)
seconds is given by `, ` S=ut + 1/2 at^2 ` and
Distance coverd in nth second is given by, `
D_n = u + a/ 2 ( 2 n- 1)` .
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Knowledge Check

  • A body covers 6m in 3rd second and 10min 5th second. If motion is uniformly accelerated, how far will it travel in the next three seconds (from t = 5 sec. to t = 8 sec).

    A
    `42m`
    B
    `72m`
    C
    `12m`
    D
    `16m`
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