The minimum amount of energy needed for a reaction to occur is known as the activation energy. Now we shall see a few real-world inelastic **collision examples** in detail. It is one of the four paradigms of sociology, which include functionalism, symbolic interactionism, and feminism. CH 4: PROBABILITY AND COUNTING RULES • Empirical Probabilities or Relative Frequency Probabilities can be calculated either from summary data or from raw data.