When you stand at rest on a floor the number of vertical force acting on you is A 0 B 1 C 2 D 3 E 4
gravity is working on you downward, and the floor is pushing up wiht the same foce.
When you stand at rest on a floor, the number of vertical forces acting on you depends on the specific situation. Let's break down the possible forces that could be acting on you in this scenario:
1. Gravity: The force of gravity is always acting vertically downward on you. This force pulls you towards the center of the Earth and gives you weight.
2. Normal force: When you stand on a floor, the floor exerts an equal and opposite force called the normal force. The normal force acts perpendicular to the surface of the floor, directed away from the floor. It counters the force of gravity and prevents you from sinking into the floor.
3. Friction force (if applicable): If there is any horizontal movement involved, such as walking or sliding, friction acts in the opposite direction to your motion. Friction is a force that opposes relative motion between two surfaces in contact.
So, when you stand at rest on a floor (assuming no horizontal motion), the number of vertical forces acting on you is A: 0. This is because there are no additional forces acting on you apart from gravity and the normal force from the floor, which cancel each other out.