Final answer:
The required number of known physical variables needed to solve for the unknown quantities using the kinematic equations when analyzing the motion of a single object is three (c).
Step-by-step explanation:
The required number of known physical variables needed to solve for the unknown quantities using the kinematic equations when analyzing the motion of a single object is three (c).
In order to solve for the unknown quantities, we need to know any three of the variables: initial velocity (v₀), final velocity (v), acceleration (a), displacement (Δx), or time (t). Using these three known variables, we can use the kinematic equations to calculate the unknown quantities.