A mass of 20 kg moving with a speed of 10m/s collides wirh another stationery mass of 5 kg.as a result the two masses stick together. the kinetic energy of the composite mass will be?
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The kinetic energy of the composite mass will be 800 Joule.
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Explanation:
By conservation of linear momentum 1st find final velocity then use
KE = 1/2 (m1+m2) v^2
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