Understanding Inelastic Collisions: A Comprehensive Guide

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Inelastic collisions are defined as interactions where kinetic energy is not conserved, although momentum is conserved. Students seeking help with related questions are encouraged to engage with the material and demonstrate their understanding through effort and problem-solving. The discussion emphasizes the importance of showing work rather than simply obtaining answers. Relevant resources for deeper understanding include HyperPhysics links that explain inelastic collisions and elastic collisions. Engaging with these resources will enhance comprehension of the topic.
adamana
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hi, i need answer for this questions please ( see th attchment)
 

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i need answer for these questions if u know the answer please
 

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?
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