Block A, with a mass of 4 kg, is moving with a speed of 2 m/s while Block B, with a mass of 8.4 kg, is moving in the opposite direction with

Question

Block A, with a mass of 4 kg, is moving with a speed of 2 m/s while Block B, with a mass of 8.4 kg, is moving in the opposite direction with a speed of 6.1 m/s. The center of mass of the two block system is moving with a velocity of ____ m/s. Round your answer to the nearest tenth. Assume Block A is moving in the positive direction.

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Tryphena 4 years 2021-09-05T09:07:14+00:00 1 Answers 6 views 0

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  1. thucuc
    0
    2021-09-05T09:08:19+00:00
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    Answer:

    The center of mass move with the velocity of -3.487 m/s.

    Explanation:

    Given values of block A.

    Mass of block A, (M1) = 4 kg

    Speed of block A, (V1) = 2 m/s

    Given values of block B.

     Mass of block B, (M2) = 8.4 kg

    Speed of block B, (V2) = -6.1 m/s

    Below is the formula to find the velocity of center of mass.

    Velocity = \frac{M1V1 + M2V2}{M1 + M2} \\

    = \frac{4 \times 2 + 8.4 \times (-6.1) }{4 + 8.4} \\

    = \frac{- 43.24}{12.4}\\

    = - 3.487 m/s

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