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infoWhy this? Probability provides formal rules for reasoning about randomness, risk, and uncertainty, including how events combine. Newton’s laws explain how resultant forces change motion and how balanced forces maintain equilibrium, connecting mathematical models with physical interactions.

scheduleWhy now? Probability builds on earlier statistical work and establishes the theoretical foundation for distributions and hypothesis testing in the next unit. Having learnt to describe motion using kinematics, we are ready to explain changes in motion through forces and Newton’s laws.