Physics, 24.06.2019 17:40 angel213326
Astone of mass 7 kg moving with a velocity of 50m/s collides with another body of mass 5kg moving with a velocity of 10m/s in the opposite direction. if after the impact, two bodies unite and move with common velocity calculate the loss in kinetic energy
Answers: 1
Where 
is the initial momentum and 
is the final momentum.
![\frac{1}{2}(m_{1}+m_{1})(v_{f})^{2}-[\frac{1}{2}m_{1}(v_{1})^{2}+\frac{1}{2}m_{2}(v_{2})^{2}]](/tpl/images/0012/6376/4c401.png)
![\frac{1}{2}(7kg+5kg)(33.33\frac{m}{s} )^{2}-[\frac{1}{2}(7kg)(50\frac{m}{s} )^{2}+\frac{1}{2}(5kg)(10\frac{m}{s} )^{2}]](/tpl/images/0012/6376/313a1.png)
![\frac{1}{2}(12kg)(1110.89\frac{m^{2}}{s^{2}})-[\frac{1}{2}(7kg)(2500\frac{m^{2}}{s^{2}} )+\frac{1}{2}(5kg)(100\frac{m^{2}}{s^{2}})]](/tpl/images/0012/6376/38cce.png)
![\frac{1}{2}(13330.68kg\frac{m^{2}}{s^{2}})-[\frac{1}{2}(17500kg\frac{m^{2}}{s^{2}} )+\frac{1}{2}(500kg\frac{m^{2}}{s^{2}})]](/tpl/images/0012/6376/8f1d3.png)
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Astone of mass 7 kg moving with a velocity of 50m/s collides with another body of mass 5kg moving wi...
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