Fuerzas opuestas

The video tutorial explains the concept of opposing forces, highlighting Newton's third law of motion. It describes how these forces act on both stationary and moving objects. For stationary objects, like a person sitting on a chair, gravity and the chair's upward force are balanced. If the chair's force is weaker, it collapses. For moving objects, such as a train, the engine's force and friction are opposing forces. If the engine's force exceeds friction, the train accelerates; otherwise, it slows down. When forces are balanced, the train moves at a constant speed.

What happens when a swimmer pushes against a wall in a pool?

• The swimmer moves backward.

• The wall moves forward.

• The swimmer moves forward.

• The wall collapses.

What keeps a person stationary when sitting in a chair?

• The chair's weight.

• Balanced opposing forces.

• The person's weight.

• The floor's friction.

What occurs if a chair cannot return an equal force when someone sits on it?

• The person will float.

• The chair will remain stable.

• The chair will collapse.

• The person will rise.

What is the opposing force to a train's engine force?

• Wind resistance.

• Magnetism.

• Friction.

• Gravity.

What happens to a train when the engine's force is less than the friction?

• The train accelerates.

• The train moves at a constant speed.

• The train slows down.

• The train stops immediately.