What object is being acted on by balanced forces?
a. a snowflake that falls and lands on a roof
b. a skateboard that rolls increasingly faster down a hill
c. a baseball that rolls to a stop in a field
d. a car that moves at a constant speed in one direction

D . A car that moves at a constant speed in one direction.

Explanation: D is the answer because a car moving in a constant speed represents a balance force because the speed is constant and the forces are balanced or , when a car travels at a constant speed, the driving force from the engine is balanced by resistive forces such as air resistance and friction in the car's moving parts.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.