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20 May, 08:43

An object has a momentum of 4,000 kg-m/s and a mass of 115 kg. It crashes into another object that has a mass of 100 kg. If the momentum is conserved, what is the new velocity? Round to the nearest hundredth.

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Answers (2)
  1. 20 May, 10:35
    0
    Answer

    19 m/s

    Explanation

    Finding the velocity of the initial object

    Momentum=mass * velocity

    P=m*v

    4000=115 * v

    v=4000/115 = 34.78⇒35m/s

    Total momentum after the collision

    Because the momentum is conserved, the total momentum afterwards = 4000kg-m/s

    Total mass after collision

    Total mass = mass of initial object + mass of second object

    Total mass = 115+100 = 215kg

    Finding new velocity after collision

    v=p/m

    =4000/215

    =18.60

    =19m/s
  2. 20 May, 11:52
    0
    its 18.60

    Explanation:

    got 100% on pf
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