tasha notices that even though she stops pulling the wagon, her brother’s body moves forward. which of newton’s law of motion explains tasha’s observations

Newton's first law.

Explanation:

The first law, in which an object moves forward in a straight line unless acted on by an outside force. It describes Inertia it the inherent property of the body due to which it opposes any change in its state of motion or rest. So due to Inertia, Tasha's brother's body moved forward.

the cell cycle is the final answer! : )