1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
8090 [49]
3 years ago
15

Goal posts at the ends of football fields are padded as a safety measure for players who might run into them. How does thick pad

ding around the goal post reduce injuries to players?
Physics
2 answers:
zepelin [54]3 years ago
7 0

The answer given by E2020 is

"The padding around the goal post increases the time of the collision between the player and the post, which decreases the force exerted to bring the player to a stop"

gulaghasi [49]3 years ago
4 0

Explanation :

Goal posts at the ends of football fields are padded as a safety measure for players who might run into them.

This is due to thick padding around the goal post reduce injuries to players. In a physics point of view, this would decrease the force.

According to Newton's second law, F = m a

or F=\dfrac{m\times v}{t}

The thick padding increases the time of interaction of the player and the post. As a result, the force will decrease.

Hence, the chances of injury can be reduced.

You might be interested in
What is the correct order of the layers' density from lowest density to highest?
Orlov [11]

Answer:

C. crust, mantle, core

Explanation:

density increases as you travel from the crust to the inner core

the crust is on top

next is the mantle

and then the core

6 0
3 years ago
Read 2 more answers
Care este pozitia unui mobil cand t(s)=14 si x(m)=12?​
mario62 [17]

name shrawan sha

DtD_LpOZ3Xm_0ff

3 0
3 years ago
A railroad car of mass 2.52 104 kg is moving with a speed of 3.86 m/s. It collides and couples with three other coupled railroad
aleksley [76]

Answer:

a)   v = 2.4125 m / s  , b)  Em_{f} / Em₀ = 0.89

Explanation:

a) This is an inelastic crash problem, the system is made up of the four carriages, so the forces during the crash are internal and the moment is conserved

Initial

          p₀ = m v₁ + 3 m v₂

Final

         p_{f} = (4 m) v

        p₀ =p_{f}

        m (v₁ + 3 v₂) = 4 m v

        v = (v₁ +3 v₂) / 4

Let's calculate

       v = (3.86 + 3 1.93) / 4

       v = 2.4125 m / s

b) the initial mechanical energy is

       Em₀ = K₁ + 3 K₂

       Em₀ = ½ m v₁² + ½ 3m v₂²

       

The final mechanical energy

         Em_{f} = K

         Em_{f} = ½ 4 m v²

The fraction of energy lost is

          Em_{f} / Em₀ = ½ 4m v² / ½ m (v₁² +3 v₂²)

          Em_{f} / Em₀ = 4 v₂ / (v₁² + 3 v₂²)

          Em_{f} / Em₀ = 4 2.4125² / (3.86² + 3 1.93²)

          Em_{f} / em₀ = 23.28 / 26.07

          Em_{f} / Em₀ = 0.89

6 0
3 years ago
Based on the data you found, about how many of the 100 aliens would become thin if the temperature were 35 C?
saw5 [17]

Answer:

Option D: More than 90

Explanation:

Thickness probably depends on temperature. The higher the temperature, the more aliens we expect to be thin.

5 0
3 years ago
Read 2 more answers
Which sentence best describes frustration?
Rus_ich [418]
I would say a. Good luck!
8 0
3 years ago
Read 2 more answers
Other questions:
  • Cranium and facial bones compose the
    13·1 answer
  • Anions are formed by _____.
    9·2 answers
  • A sealed balloon is filled with 1.00 L of helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the
    7·1 answer
  • What scenarios best describes how the hawaiian islands formed in the pacific ocean?
    5·1 answer
  • According to the law of conservation of matter,the number of ______ is not changed by a chemical reaction
    14·2 answers
  • Pictures below :) <br><br>Have a nice day!!​
    11·1 answer
  • 1. °C= (°F-32) X 5/9. what will be the answer?
    7·1 answer
  • What is radioactivity?​
    9·2 answers
  • I've been on this for a while please help me
    12·1 answer
  • Please solve the Problem.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!