Soccer retake - Contact Forces (version 3)

How would the forces from a header with such a light soccer ball cause a concussion?

Draw arrows in the force diagram to show where the force is pushing on each object.

There are three types of collisions that tend to happen frequently in soccer: (a) headers, (b) collisions between players’ heads, and (c) a player’s head hitting the ground.

How would the amount of force on the head compare to the amount of force on the object it collides with (a soccer ball (a), another head (b), or the ground (c) in each system A, B, and C?

Which two of these are true (and support your answer to #2)?

Sports scientists concluded that concussions result from headers, a running player colliding with another running player, and a running player hitting the ground.

So far in this unit, we have looked at collisions and how much kinetic energy the objects in the system have before they collide and how this is related to the peak forces they can produce in any collision.

Let’s consider the three main types of systems that can lead to concussions and make predictions about them using forces and energy as it relates to player #84.

Think about kinetic energy! Considering both objects that are about to collide in each interaction, which system would you predict to have the LEAST amount of total kinetic energy in the system right before the objects collide?

In each instance below, player #84 is running at a speed of 7 miles per hour.

The brain is an organ made of interconnected cells called neurons. Neurons send signals to communicate information from one neuron cell to another. The long part of the neuron is called an axon, and those axons have a breaking point. Recent research provides evidence that permanent damage to axons in the brain occurs from just a single damaging head collision (concussion).

Axons in the brain:

Write an argument: During a head collision, which system (A, B, or C) would be most likely to cause damage to some of the axons in the brain? Use ideas related to kinetic energy, peak forces, and breaking point for these structures in the brain and axons in your argument.

Peak forces between 2 objects in a collision are always

Objects that are NOT moving have Kinetic Energy

Greater forces in a collision = greater damage or shape change

In your own words, what does deform mean?

Draw an image to explain "deform"

One thing I did to study for this assessment was:

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