Recent studies have raises concern about \"heading\" in youth soccer. A soccer p
ID: 1395156 • Letter: R
Question
Recent studies have raises concern about "heading" in youth soccer. A soccer player head's a size 4 ball deflecting it by 34(deg) and keeps its speed of 19m/s constant. A size 4 ball has a mass of approx 0.296 kg. 1- what is a the magnitude of the impluse which the player must impart to the ball? 2- if the player's head has a mass of 3.90 kg, what is the magnitude of the average acceleration of the player's head during the impact. Assume that over the brief time of the impact, 27.00 ms. The players head can be treated separately from the player's body. Recent studies have raises concern about "heading" in youth soccer. A soccer player head's a size 4 ball deflecting it by 34(deg) and keeps its speed of 19m/s constant. A size 4 ball has a mass of approx 0.296 kg. 1- what is a the magnitude of the impluse which the player must impart to the ball? 2- if the player's head has a mass of 3.90 kg, what is the magnitude of the average acceleration of the player's head during the impact. Assume that over the brief time of the impact, 27.00 ms. The players head can be treated separately from the player's body. 1- what is a the magnitude of the impluse which the player must impart to the ball? 2- if the player's head has a mass of 3.90 kg, what is the magnitude of the average acceleration of the player's head during the impact. Assume that over the brief time of the impact, 27.00 ms. The players head can be treated separately from the player's body.Explanation / Answer
1) Apply impulse = chnage in momentum
= m*(v2 - v1)
= 0.296*(19 - 0)
= 5.624 N.s <<<<<<<<---------Answer
2) Average force exerted by the player on the ball, F = impulse/t
= 5.624/0.027
= 208.3 N
According to Newton's third law the same force is exerted by ball on the player.
so, average acceleration of the player's head during the impact a = F/m
= 206.3/3.9
= 53.4 m/s^2 <<<<<<<<---------Answer
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