A car is parked on the side of a hill. Which of the following most likely prevents the car from moving down the hill? A The car has too much mass to move easily. B) There is friction in the door hinges of the car. There is friction between the tires and the road. The weight of the car is mostly on the front wheels.

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### Physics of Motion: Car on a Hill

**Topic:** Understanding Forces and Friction on an Inclined Plane

#### Question:

A car is parked on the side of a hill. Which of the following most likely prevents the car from moving down the hill?

**Options:**

A. The car has too much mass to move easily.

B. There is friction in the door hinges of the car.

C. There is friction between the tires and the road.

D. The weight of the car is mostly on the front wheels.

#### Explanation:

To answer this question, let’s analyze each option in the context of physics, particularly focusing on forces and friction.

**Option A:** *The car has too much mass to move easily.*
- **Analysis:** While mass does contribute to the force of gravity acting on the car, it does not directly prevent the car from moving. In fact, more mass could potentially make it easier for the car to roll downhill due to increased gravitational force.

**Option B:** *There is friction in the door hinges of the car.*
- **Analysis:** Friction in the door hinges is not significant enough to prevent the entire car from moving. This type of friction is minimal and localized, affecting only the operation of the doors.

**Option C:** *There is friction between the tires and the road.*
- **Analysis:** This is the correct answer. The friction between the tires and the road, known as static friction, resists the initial motion of the car. This frictional force can hold the car in place even on an inclined plane, depending on the steepness of the hill and the surface material.

**Option D:** *The weight of the car is mostly on the front wheels.*
- **Analysis:** The distribution of weight might affect the balance and stability of the car but does not directly prevent it from moving down an incline. The primary force at play here is still the friction between the tires and the road.

### Conclusion:
**Correct Answer: C. There is friction between the tires and the road.**

**Graphical Representation:**
- There are no graphs or diagrams provided in this question. However, to further illustrate, if we were to draw a diagram, it would include:
  - A car positioned on a sloped hill.
  - Arrows indicating the gravitational force pulling the car downhill.
  - Arrows showing the frictional force opposite to the direction of potential movement, between the tires and the road.

Understanding these
Transcribed Image Text:### Physics of Motion: Car on a Hill **Topic:** Understanding Forces and Friction on an Inclined Plane #### Question: A car is parked on the side of a hill. Which of the following most likely prevents the car from moving down the hill? **Options:** A. The car has too much mass to move easily. B. There is friction in the door hinges of the car. C. There is friction between the tires and the road. D. The weight of the car is mostly on the front wheels. #### Explanation: To answer this question, let’s analyze each option in the context of physics, particularly focusing on forces and friction. **Option A:** *The car has too much mass to move easily.* - **Analysis:** While mass does contribute to the force of gravity acting on the car, it does not directly prevent the car from moving. In fact, more mass could potentially make it easier for the car to roll downhill due to increased gravitational force. **Option B:** *There is friction in the door hinges of the car.* - **Analysis:** Friction in the door hinges is not significant enough to prevent the entire car from moving. This type of friction is minimal and localized, affecting only the operation of the doors. **Option C:** *There is friction between the tires and the road.* - **Analysis:** This is the correct answer. The friction between the tires and the road, known as static friction, resists the initial motion of the car. This frictional force can hold the car in place even on an inclined plane, depending on the steepness of the hill and the surface material. **Option D:** *The weight of the car is mostly on the front wheels.* - **Analysis:** The distribution of weight might affect the balance and stability of the car but does not directly prevent it from moving down an incline. The primary force at play here is still the friction between the tires and the road. ### Conclusion: **Correct Answer: C. There is friction between the tires and the road.** **Graphical Representation:** - There are no graphs or diagrams provided in this question. However, to further illustrate, if we were to draw a diagram, it would include: - A car positioned on a sloped hill. - Arrows indicating the gravitational force pulling the car downhill. - Arrows showing the frictional force opposite to the direction of potential movement, between the tires and the road. Understanding these
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