Question

describe the motion of the blocks before and after they are knocked down. also describe the interactions of the blocks with other objects as they are knocked down and fall.

Explanation:

Before being knocked down, the blocks are at rest (static equilibrium). When knocked down, they start moving (accelerate) due to an external force (like a push). As they fall, they interact with air (air resistance acts on them) and the surface they land on (normal force and friction when they come to rest on the ground).

Answer:

Before: At rest (static equilibrium). After: Accelerate when knocked, then fall. Interactions: Air (air resistance), surface (normal force, friction when landing).