Pls help me ASAP it is for a final I dont understanddddd Real help
2 answers:
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Answer:
Explanation:
Speed experimented by the ball before and after collision are determined by using Principle of Energy Conservation:
Before collision:
After collision:
The magnitude of the impulse delivered to the ball by the floor is calculated by the Impulse Theorem:
just analyze it in this way:
20cos30*=10( radical 3 )
20sin30*=10
