Calculating Force Exerted on Football Tackler

  • Thread starter mathcrzy
  • Start date
The difference between the two will give you the change in momentum.In summary, the problem involves a fullback weighing 110 kg running at 4.9 m/s to the east and being stopped in 0.75 s by a head-on tackle from a tackler running due west. The average force exerted on the tackler can be found by calculating the change in momentum of the fullback, using the equation F=ma and the concept of impulse. After solving, the average force exerted on the tackler is approximately 404.25 N.
  • #1
mathcrzy
47
0

Homework Statement



A 110 kg fullback is running at 4.9 m/s to the east and is stopped in 0.75 s by a head-on tackle by a tackler running due west. Calculate the average force exerted on the tackler.
Magnitude
____N

Homework Equations



F=ma

The Attempt at a Solution



F=110*4.9=539N
 
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  • #2
4.9 m/s is velocity, not acceleration. So it doesn't work in that equation. Look up impulse.
 
  • #3
Impulse=F*deltaT

=(110*4.9)*.75

=404.25
 
  • #4
You are trying to find F though. You can find impulse by considering the change in momentum of the player. Once you have that, you can then find the average force.
 
  • #5
would you use the equation (before the collision) M1*V2+M2*V2=M1*V2+M2*V2 (after the collision)
 
  • #6
That's the right idea, you need to find the change in momentum of the fullback. You were given his initial velocity, so you know the initial momentum. You know he is brought to a stop, so you also know his final momentum.
 

1. How do you calculate the force exerted on a football tackler?

The force exerted on a football tackler can be calculated using the formula F=ma, where F is force, m is mass, and a is acceleration. To calculate the acceleration, you will need to know the velocity of the football tackler before and after the tackle, as well as the time it took for the tackle to occur.

2. What units are used to measure force?

The SI unit for force is Newtons (N). Other commonly used units include pounds (lbs) and kilogram-force (kgf).

3. How does the force exerted on a football tackler affect the player?

The force exerted on a football tackler can have varying effects on the player, depending on their physical strength and conditioning. In some cases, it can result in injuries such as concussions, muscle strains, or broken bones. It is important for players to properly train and condition their bodies to handle the force of tackles.

4. Are there any factors that can affect the calculation of force on a football tackler?

Yes, there are several factors that can affect the calculation of force on a football tackler. These include the angle and direction of the tackle, the surface on which the tackle occurs, and any external forces acting on the player during the tackle.

5. Can the force exerted on a football tackler be reduced?

Yes, the force exerted on a football tackler can be reduced by using proper tackling techniques, such as keeping the head up and using the arms to absorb some of the impact. Additionally, wearing appropriate protective gear, such as helmets and pads, can help reduce the force of a tackle.

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