Question
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Bumper car moves east at .
Bumper car moves east at .
If the cars have an elastic collision,
what would the velocity of car 1 be
afterwards?
Remember East is positive : west is negative .

Ask by Davey Dickson. in South Africa
Jan 22,2025

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Tutor-Verified Answer

Answer

After the elastic collision, bumper car 1 moves east at approximately .

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Beyond the Answer

To find the final velocity of bumper car 1 after an elastic collision, we can use the conservation of momentum and the principle of conservation of kinetic energy. Assuming both cars collide elastically and along a straight line (in the east direction), we can set up two equations.
  1. Conservation of Momentum:
    where:
    • (mass of car 1)
    • (mass of car 2)
    • (initial velocity of car 1)
    • (initial velocity of car 2)
    • and are the final velocities of car 1 and car 2 after the collision.
  2. Conservation of Kinetic Energy:
We can simplify the problem using formulas for the final velocities after an elastic collision:
Plugging in the numbers for :
Thus, the final velocity of car 1 is:

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