Question

1. choose the best answer. which surface would provide the least friction when moving a wheelbarrow? a grassy field a concrete pad a dirt trail up a hill a gravel driveway 18. choose the best answer. what is the act of changing position? motion net force newton force

Explanation:

1. Friction depends on surface roughness. A concrete pad is smoother compared to a grassy field, a dirt trail up a hill, and a gravel driveway, so it provides the least friction for moving a wheelbarrow.
2. The act of changing position is defined as motion. Net - force is the total of all forces acting on an object, newton is the unit of force, and force is a push or pull.

Answer:

1. a concrete pad
2. motion