A bus accelerates at -0.5 m/s2 for 12.5 seconds . If the bus had an initial speed of 31 m/s, what is its new speed? A. 12.25m/s B. 37.25m/s

Question

A bus accelerates at -0.5 m/s2 for 12.5 seconds . If the bus had an initial speed of 31 m/s, what is its new speed? A. 12.25m/s B. 37.25m/s C. 24.75m/s D. 6.25m/s

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RI SƠ 4 years 2021-08-16T10:25:40+00:00 1 Answers 14 views 0

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  1. haidang
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    2021-08-16T10:27:27+00:00
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    Answer:

    37.5m/s

    Explanation:

    a=(v-u)/t

    0.5 = (v – 31) / 12.5

    v – 31 = 0.5 x 12.5

    v – 31 = 6.25

    V = 6.25 + 31

    v = 37.25m/s

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )