a piece of clay with mass m is traveling with an unknown velocity in the positive x-direction, when it collides and sticks to a block of mas

Question

a piece of clay with mass m is traveling with an unknown velocity in the positive x-direction, when it collides and sticks to a block of mass 3m, moving with velocity v=-3m/s. after the collision, the block and clay are stuck together and traveling with a velocity of 1 m/s in the negative x-direction. what was the original velocity of the clay mass?

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Edana Edana 1 year 2021-09-03T20:22:31+00:00 1 Answers 22 views 0

Answers ( )

  1. Neala
    0
    2021-09-03T20:24:23+00:00
    Reply

    Answer:

    13 m in the + x direction.

    Explanation:

    Givens

    m1 = m

    m2 = 3m

    v1= ? = x

    v2 = – 3 m/s

    v3 = v4 = – 1 m/s

    Equation

    Let x be the speed of the lighter object before collision.

    Momentum before collision = momentum after collision

    Solution

    mx   – 3m * 3m/s = (m1 + m2)*(-1)

    m(x – 3*3m/s) = (m + 3m)(-1)

    m(x – 9) = – 4m                                      Cancel the ms

    x – 9 = 4                                                 Add 9 to both sides

    x = 9 + 4

    x = 13 m/s

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