Q1: A metal block of mass M is attached to a spring of negligible mass and elastic constant k, as shown in Fig. 1(a), and is free to slide on a frictionless horizontal surface. A clay ball of mass M/4 is is fired at the block with velocity V , and is attached to it as shown. The block is initially at rest and The spring is initially relaxed. (a) What is the velocity of the block + ball immediately after impact? (b) Conceptual discussion - Is energy conserved? If yes, justify, if no, calculate ∆K/Ki and explain what hap

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