suppose that you are walking down the street. Describe the force acting on you, and describe how they change your motion
your feet are going forward so you you can move forward it changes your motion by going forward
The graviity what keeps you on the ground unbalnced froce is keeping you walking you are walking in unbalnced force
When walking down the street, there are typically two main forces acting on you: gravitational force and friction force.
1. Gravitational force: This force is exerted on you by the Earth's gravitational pull. It acts vertically downwards, towards the center of the Earth. It keeps you firmly on the ground and determines your weight. This force remains constant, and its magnitude depends on your mass.
2. Friction force: When walking, your feet exert a force on the ground backwards, and the ground exerts an equal and opposite force on your feet forwards. This force is called friction. Friction helps you maintain your motion and prevents your feet from slipping on the ground. It acts horizontally and opposes the direction of your movement. The strength of friction depends on the nature of the surface, your footwear, and the force with which you push against the ground.
These forces affect your motion in the following ways:
1. Gravitational force: The gravitational force has no direct effect on your horizontal motion while walking. It primarily affects your vertical motion, making you stay on the ground. However, if you are walking uphill or downhill, the gravitational force may have a slight component in the direction of your motion, either assisting or opposing it.
2. Friction force: The friction force plays a crucial role in changing your motion as you walk. When you push against the ground with your feet, the friction force counteracts this movement by providing an opposing force, making you move forward. Without friction, your feet would slip on the ground, and you would not be able to generate forward motion. The strength of friction determines how easily you can move and also influences the speed at which you walk.
To summarize, the gravitational force keeps you on the ground and has minimal direct impact on your horizontal motion. Friction is responsible for propelling you forward and controlling the ease and speed of your walking motion.