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Subhayu Panda posted an Question
August 21, 2022 • 02:52 am
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30 points
30 points
- IIT JAM
- Physics (PH)
Two similar cars of mass m each, moving with a uniform speed v, make a head-on colision and come torest. the damage suffered by the cars is directly proportiona
Two similar cars of mass m each, moving with a uniform speed v, make a head-on colision and come torest. The damage suffered by the cars is directly proportional to (a)v (b) (c)miv (d) mv
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Dr suman 1![best-answer]()
Their kinetic energy after collision is zero while their kinetic energy before collision is m * v^2. So the loss of kinetic energy is m * v^2. Energy before collision= 2× ½ m v² = m v². Energy after collision=0. Change in energy = 0 - mv² = - mv². It is an inelastic collision, where the entire energy is dissipated in the car system of 2 cars. so may be option c is correct.