A 2 kg object at 6 m/s hits a 4 kg object at rest and they stick together. The kinetic energy lost is:

  1. 36 J
  2. 24 J
  3. 12 J
  4. 48 J
Answer

B) 24 J

v = 2 m/s. KE before = 36 J, after = 12 J, so 24 J is converted to heat, sound and deformation. SLO P-11-B-13 · Application

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