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Two objects of mass 100g and 200g are moving along the same line and in the same direction with velocities 2m/s and 1m/s. They collide and stick together. How much is the loss in kinetic energy of 100g mass? The options are:-- a) 10/9 J b) 1/9 J c) 100/9 J d) 1000/9 J |
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Answer» etic energy of 100 g mas=½*(0.1)*(2)²=0.2 JUsing conservation of momentum(0.1)*2+(0.2)*1=(0.2+0.1)vSolving the EQUATION v=1.33Final kinetic energy of 100 g mas=½(0.1)(1.33)²=0.089 JHence loss in kinetic energy would be =0.2- 0.089=0.11 J |
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