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A rider took 30. 10 rover 30 km. What was her average speed in m/s? (3 marks) 29. The figure below shows a drawing made by learners during a Mathematics session. Using a ruler, or any other relevant instrument, measure the size of

Mathematics

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Huu hapa ni ufumbuzi wa swali la 28:

  1. Badilisha umbali kutoka kilomita kwenda mita.

    Tunajua kuwa 1 km=1000 m1 \text{ km} = 1000 \text{ m}.

    Umbali=36 km×1000mkm=36000 m\text{Umbali} = 36 \text{ km} \times 1000 \frac{\text{m}}{\text{km}} = 36000 \text{ m}

  2. Badilisha muda kutoka dakika kwenda sekunde.

    Tunajua kuwa 1 dakika=60 sekunde1 \text{ dakika} = 60 \text{ sekunde}.

    Muda=30 dakika×60sekundedakika=1800 sekunde\text{Muda} = 30 \text{ dakika} \times 60 \frac{\text{sekunde}}{\text{dakika}} = 1800 \text{ sekunde}

  3. Kokotoa kasi ya wastani kwa kutumia fomula

    Kasi = Umbali / Muda.

    Kasi ya wastani=UmbaliMuda\text{Kasi ya wastani} = \frac{\text{Umbali}}{\text{Muda}} Kasi ya wastani=36000 m1800 s\text{Kasi ya wastani} = \frac{36000 \text{ m}}{1800 \text{ s}} Kasi ya wastani=20ms\text{Kasi ya wastani} = 20 \frac{\text{m}}{\text{s}}

    Kasi yake ya wastani ilikuwa:

    20 m/s\boxed{\text{20 m/s}}
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