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Problem 3 (30 Marks) A 15.0 g iron bullet with a speed of 6.70 x 102 m/s is stopped inside a 0.500 kg block of wood that is held fixed in place. Assume that both the bullet and wooden block temperatures are initially at 20.0 *C. A. Find the kinetic energy of the iron bullet just before entering the wooden block. (6 marks) B. If the bullet stops 10.0 cm into the wooden block, what is the total resistance force given by the wood to the bullet? (8 marks) C. When the bullet enters the wooden block, assume initially all the bullet's kinetic energy goes into the internal energy of the bullet, find the maximum temperature increase of the bullet. (8 marks) D. Assume the wooden block is in an ideal isolated environment and after a short time the bullet and the wooden block reach thermal equilibrium, what is the temperature of the attained equilibrium state? (8 marks) [The specific heat capacities: iron = 448 J/kg "C, Wood = 1.35 x 103 J/kg "C]