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Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j