enjealaesleawa10 enjealaesleawa10

25-05-2022
Physics

contestada

A 5-kg ball rolling at a speed of 3 m/s strikes a 2-kg ball at rest. The 5-kg ball then comes to a stop and the 2-kg ball begins to roll forward. Determine how fast the 2-kg ball is moving.

Velocity: _ m/s

Respuesta :

andrewyang1818 andrewyang1818

25-05-2022

Answer:

7.5m/s

Explanation:

Law of conservation of momentum: momentum in a system before collision equals to that after collision/

5kg*3m/s=2kg*v

15kgm/s=2kg*v

v=7.5m/s

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