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Describe the rules for goalkeeper substitutions in the following four situations:

a. The GK wants to switch with a teammate on his bench.

User Sargeant
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1 Answer

5 votes

Final answer:

The question involves the physics of a soccer ball's motion, discussing forces acting upon it during play and the potential of a goalie scoring from their own penalty area. Displacement over time graphs for a soccer ball kicked to a goalie would resemble those of a hockey puck, showing deceleration and acceleration.

Step-by-step explanation:

The scenarios posed in the question revolve around the physics of a soccer ball when in motion and the rules of soccer related to goalkeepers. For example, the forces acting on a kicked soccer ball include gravity, air resistance, and friction. Regarding the goalkeeper's ability to score a goal from their own penalty area, the act is theoretically possible if they can provide the soccer ball with enough speed and the correct trajectory to travel 95 meters without touching the ground, given they can kick the ball at an initial speed of 30 m/s. The displacement over time graph of a ball kicked to a goalie and returned would appear similar to the graph for a hockey puck; it would show initial motion, a period of deceleration, and then acceleration back in the opposite direction.