When a horse pulls a wagon, the force that causes the horse to move forward is the force

Options

A. the cart on the horse
B. the ground on the horse
C. the ground on the cart
D. the horse on the ground

Answer

To solve the question, "When a horse pulls a wagon, the force that causes the horse to move forward is the force," we can follow these steps:

### Step 1: Understand the scenario
When a horse is pulling a wagon, it exerts a force on the wagon. This force is directed forward, causing the wagon to move.

**Hint:** Visualize the interaction between the horse and the wagon, and identify the direction of the forces involved.

### Step 2: Identify the forces acting on the horse
The horse experiences a backward force due to the tension in the wagon (let's call this force T). This tension tries to pull the horse backward.

**Hint:** Consider how the forces are acting on the horse and the wagon separately.

### Step 3: Analyze the horse's action
To counteract the backward force (T) and move forward, the horse must push against the ground. By pushing the ground backward, the horse generates a reaction force according to Newton's third law.

**Hint:** Recall Newton's third law, which states that for every action, there is an equal and opposite reaction.

### Step 4: Identify the reaction force on the horse
When the horse pushes the ground backward, the ground pushes the horse forward with an equal and opposite force. This forward force from the ground is what allows the horse to move forward.

**Hint:** Think about how the ground responds to the horse's action.

### Step 5: Conclude the answer
The force that causes the horse to move forward is the force exerted by the ground on the horse. This is the reaction force to the horse pushing the ground backward.

**Hint:** Look for the correct option that describes the force acting on the horse in the context of the problem.

### Final Answer
The force that causes the horse to move forward is the force exerted by the ground on the horse.