Puck 1 (1 kg) travels with velocity 20 m/s to the right when it collides with puck 2 (1 kg) which is initially at rest. After the collision,

Question

Puck 1 (1 kg) travels with velocity 20 m/s to the right when it collides with puck 2 (1 kg) which is initially at rest. After the collision, puck 1 moves with a velocity of 5 m/s. Assume that no external forces are present and therefore the momentum for the system of pucks is conserved. What is the final velocity (in m/s) of puck 2 after the collision

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Thu Nguyệt 4 months 2021-07-14T04:12:46+00:00 1 Answers 2 views 0

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    2021-07-14T04:13:53+00:00

    Answer:

    Explanation:

    Parameters given:

    Mass of Puck 1, m = 1 kg

    Mass of Puck 2, M = 1 kg

    Initial velocity of Puck 1, u = 20 m/s

    Initial velocity of Puck 2, U = 0 m/s

    Final velocity of Puck 1, v = 5 m/s

    Since we are told that momentum is conserved, we apply the principle of conservation of momentum:

    Total initial momentum of the system = Total final momentum of the system

    mu + MU = mv + MV

    (1 * 20) + (1 * 0) = (1 * 5) + (1 * V)

    20 = 5 + V

    V = 20 – 5 = 15 m/s

    Puck 2 moves with a velocity of 15 m/s

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