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tedDy
tedDy asked in Sains & MatematikaFisika · 1 decade ago

soal hitungan ttg HK. Newton II, kk fisika tolong jawab y?

koefisien gesekan statik antara ban mobil dan jalan horizpontal adalah 0,6. jika gaya neto pada mobil adalah gaya gesekan statik yang dikerjakan oleh jalan, (a) berapakah percepatan maksimum mobil? (b) dalam jarak paling sdikit berapakah mobil dapat berhenti jika mobil mula-mula bergerak dengan kelajuan 30m/s?

1 Answer

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  • Mukti
    Lv 7
    1 decade ago
    Favorite Answer

    a,

    fs = m a

    μs m g = m a

    a = μs g

    a = 0,6 x 10 = 6 m/s²

    b.

    vt² = vo² + 2 a s

    0 = 30² + 2 (-6) s

    s = 75 m

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