Recent studies have raised concern about`heading\' in youth soccer (i.e., hittin
ID: 1671856 • Letter: R
Question
Recent studies have raised concern about`heading' in youth soccer (i.e., hitting the ball with the head). Asoccer player `heads' a size 3 ball deflecting it by59.0°, and keeps its speed of 11.60m/s constant. A size 3 ball has a mass of approximately 2.000 kg.What is the magnitude of the impulse which the player must impartto the ball?If the player's head has a mass of 2.10 kg,what is the magnitude of the average acceleration of the player'shead during the impact. Assume that over the brief time of theimpact, 21.50 ms, the player's head can be treated separately fromthe player's body
Recent studies have raised concern about`heading' in youth soccer (i.e., hitting the ball with the head). Asoccer player `heads' a size 3 ball deflecting it by59.0°, and keeps its speed of 11.60m/s constant. A size 3 ball has a mass of approximately 2.000 kg.What is the magnitude of the impulse which the player must impartto the ball?
If the player's head has a mass of 2.10 kg,what is the magnitude of the average acceleration of the player'shead during the impact. Assume that over the brief time of theimpact, 21.50 ms, the player's head can be treated separately fromthe player's body
Explanation / Answer
impulse=change inmomentum/time=2[-11.60cos59-11.60]/21.5*10-3=-1635N acceleartion=F/mass=1635/2.1=778.49m/sec2
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