Question

QUESTION 18 Given the preceding result and the formula we derived in class for the heat produced during a completely inelastic collision (.e. such that the colliding objects end up sticking together), what should be the minimum value of the relative velocity of two snowballs, weighing at 1/2 lb each, so that they both melt as a result of a head-on collision? For simplicity, assume the snowballs are at zero degrees Celsius. Give answer in m/sec. (This problem will make you appreciate how much energy is stored at the molecular level, relative to the kinetic energy at macroscopic scales. The amount of energy stored in chemical bonds is even greater, which explains why we burn fuel to move heavy things around.)

Answer 1

Alba 0.2?179 kg buth are moving in opposite direction with velocity w Sox.bj mo?+L most fiz MV-mvöð Piso Pof a anul so v TO AKE = mr . This AKE will be converted as . Heat to melt the ice Qfmice) e 3348133 * 10.453512) Q: 151.499 X10% so AK. Ez a v² = 3344163 < < lva 668 X 817.312 < mis

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