Solve Elastic Collision | 2kg Object Moving at 3m/s Hits Stationary 4kg Object

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SUMMARY

The discussion focuses on an elastic collision problem involving a 2kg object moving at 3m/s colliding with a stationary 4kg object. After the collision, the 4kg object moves at 0.5m/s. Using the principles of conservation of momentum and kinetic energy, the final velocity of the 2kg object can be calculated. The final velocity is determined to be 2.5m/s, confirming the conservation laws applicable in elastic collisions.

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  • Basic algebra for solving equations
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Homework Statement



An object of 2kg moving at 3m/s hits a 4 kg stationary object, causing the stationary object to begin moving at 0.5m/s. How fast is the original object now travelling?

It is an elastic collision.

Homework Equations



Not really sure, 1/2mv^2 I presume.

The Attempt at a Solution



None so far, I'm stuck on it and am not sure how to approach it.
 
Physics news on Phys.org
What principle can be used in a collision?
 
Namely, what quantity involves mass and velocity, so we can use all your given data? What can we say about its value before and after the collision?
 

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