The triple jump is a track-and-field event in which an athlete gets a running start and tries to leap as far as he can with a hop, step, and jump. Shown in the figure is the initial hop of the athlete. Assuming that he approaches the takeoff line from the left with a horizontal velocity of 10 m/s, remains in contact with the ground for 0.15 s, and takes off at a 50° angle with a velocity of 12 m/s, determine the vertical component of the average impulsive force exerted by the ground on his foot. Give your answer in terms of the weight W of the athlete. 12 vs 10 s Takt off line

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Problem #1
The triple jump is a track-and-field event in which an athlete gets a running start and tries to leap
as far as he can with a hop, step, and jump. Shown in the figure is the initial hop of the athlete.
Assuming that he approaches the takeoff line from the left with a horizontal velocity of 10 m/s,
remains in contact with the ground for 0.15 s, and takes off at a 50° angle with a velocity of 12
m/s, determine the vertical component of the average impulsive force exerted by the ground on his
foot. Give your answer in terms of the weight W of the athlete.
12 ms
10 ms
Take
off line
Transcribed Image Text:Problem #1 The triple jump is a track-and-field event in which an athlete gets a running start and tries to leap as far as he can with a hop, step, and jump. Shown in the figure is the initial hop of the athlete. Assuming that he approaches the takeoff line from the left with a horizontal velocity of 10 m/s, remains in contact with the ground for 0.15 s, and takes off at a 50° angle with a velocity of 12 m/s, determine the vertical component of the average impulsive force exerted by the ground on his foot. Give your answer in terms of the weight W of the athlete. 12 ms 10 ms Take off line
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