The final lesson accepts the complete deterministic active-motion ledger. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Combine terminal speed, persistence, and bias
The ledger uses speed 4 m/s, persistence time 3 s, and biased displacement 24 m.
4m/s3s24m
Accept only the connected active-motion ledger
The audit accepts the book's active-motion chain because each displayed value cites the matching checked source.