Two identical blocks A and B are at rest on a frictionless plane. Block C of the same weight hits block B with a velocity of 2.5 m/s. Knowing that the coefficient of restitution is 0.7 between block B and block C and 0.4 between block A and block B. (i)  Determine the velocity of each block after all collisions have taken place. (ii)  From your working in Q1(a)(i), predict whether there will be another collision after block B collides with block A? (iii)  If the coefficient of restitution between block A and block B is changed to 0.7, explain with calculations whether there will be a collision between block B and block C after block B collides with block A?

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.