What are the speed and direction of each ball after the collision?

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SUMMARY

The discussion centers on calculating the speed and direction of two balls after a perfectly elastic collision. A 0.060 kg tennis ball moving at 2.50 m/s collides with a 0.090 kg ball moving at 1.15 m/s. The conservation of momentum equation, mVi + mVi' = mVf + mVf', is crucial for solving this problem. Additionally, understanding the principles of elastic collisions is necessary to derive the second equation needed for the solution.

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  • Understanding of momentum conservation principles
  • Knowledge of elastic collision mechanics
  • Familiarity with basic algebra for solving equations
  • Ability to interpret physical quantities such as mass and velocity
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  • Study the principles of elastic collisions in detail
  • Learn how to apply conservation of momentum in two-dimensional collisions
  • Explore examples of elastic collision problems in physics textbooks
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Homework Statement


A 0.060kg tennis ball, moving with a speed of 2.50m/s, collides head-on with a 0.090kg ball initially moving away from it at a speed of 1.15m/s. Assuming a perfectly elastic collision, what are the speed and direction of each ball after the collision?


Homework Equations


mVi + mVi' = mVf + mVf'

deltaP1 = deltaP2


The Attempt at a Solution


I am at a complete loss of how to approach this problem :[
 
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The first equation is good - fill in the numbers and see what you can find!
Looks like you need to look up "elastic collision" to find out what it means so you can write a second equation.
 

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