Question

5 select the correct answer. which force causes a wagon to speed up as it rolls down a hill? a. friction b. gravity c. mass d. normal

Explanation:

Gravity is the force that pulls objects towards the center of the Earth. When a wagon rolls down a hill, gravity acts as a downward - pulling force that causes it to accelerate. Friction opposes motion, mass is a property of matter and not a force that directly causes the wagon to speed up in this context, and the normal force acts perpendicular to the surface of the hill.

Answer:

B. gravity