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The graph shows the kinematics (vertical position, velocity, and acceleration) of the center of gravity of a diver and the reaction force of the diving boar during the takeoff phase for a 3 1?2 backward somersault dive in the tuck position.
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a) At what time(s) (approximately) does the displacement of the diver change direction? How many times does this occur during the takeoff phase of the dive?
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b) When does the center of gravity accelerate in the upward direction and when does it accelerate in the downward direction?
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c) What is the relationship between the diver’s acceleration curve and the reaction force curve?
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d) What is the relationship between the diver’s position and reaction force curves?
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Homework Answers
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The
graph shows the kinematics (vertical position, velocity, and
acceleration) of the center of gravity of...
The following figure shows the kinematics and vertical component of the ground reaction force dur...
The following figure shows the kinematics and vertical component
of the ground reaction force during a vertical jump. On the figure,
indicate and explain the following events:
(1) Takeoff
(2) Peak vertical velocity
(3) Jump impulse
(4) What is the relationship between force and
acceleration?
Velocity Acceleration Force 1800-24 6 F0.6 120016 4 0.4 Body weight 600-8 2 0.2 0- 0 -600-8 IE-2 -0.2 0.2 0.4 0.6 0.8 Time (s)
Velocity Acceleration Force 1800-24 6 F0.6 120016 4 0.4 Body...
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A 75-kg volleyball player performs a maximum-effort vertical jump with an initial velocity of 3 m/s....
A 75-kg volleyball player performs a maximum-effort vertical jump with an initial velocity of 3 m/s. The player leaves the ground with an upright body position and also touches down with the same body position. Answer the following: ua A. How much will the player's center of mass (COM) travel in the air along the vertical direction during the ascending phase of the jump? Compute the maximum kinetic energy of the player during the jump. C. Compute the maximum potential...
Between figure the acceleration arrow you should draw through each position dot during step 1 sho...
N3M.12
between figure the acceleration arrow you should draw through each position dot during step 1 should point from the puck's position at that instant toward the table's center, since the Ca string's tension force acts in that direction.] (b) Check your work using the Newton program. N3M.12 In this problem, we will explore the necessary con- t ditions for uniform circular motion. (a) According to chapter N1, an object moving in a circle of radius rat constant speed llexperiences...
5:16 lLTE ) Done 1 of 5 Assessment #1 (Kinematics of a Particle) Rectilinear Motion (Straight...
5:16 lLTE ) Done 1 of 5 Assessment #1 (Kinematics of a Particle) Rectilinear Motion (Straight linc Motion 3. The position of a point during the interval of time from r otor 6 is given by ** * m. (a) What is the maximum velocity during this interval of time, and at what time does it occur? (b) What is the acceleration when the velocity is a maximum? (20 m/s, 0 m/s 3. A test projectile is fired horizontally into...
1. KINEMATICS: Kickoff During kickoff for the Oakland Raiders, Sebastian Janikowski's powerful left leg launches the...
1. KINEMATICS: Kickoff During kickoff for the Oakland Raiders, Sebastian Janikowski's powerful left leg launches the ball from the 30-yard line with the initial velocity of 30 m/s. a. Assuming no air resistance, can the ball reach the end of the field, i.e. travel at least 80 yards (73 m), resulting in a touch-back? Please explain (a yes or no answer is not sufficient) b. Assuming Mr. Janikowski chose the best possible angle for the kick, how long is the...
Question 7 is related to the force vs mass graph that is provided and the first...
Question 7 is related to the force vs mass graph that is
provided and the first section of the excel sheet. Question 3 has
to do with the force bs acceleration graph and second section of
the excel sheet. The first two files are showing the equations that
are supposed to be used to find these answers. Any help would be
greatly appreciated.
I
mainly need assistance on number 1 and 2 now. The question with the
free body diagram...
1. A pole is held vertically by attaching wires at a height of 13.4 m above...
1. A pole is held vertically by attaching wires at a height of 13.4 m above the ground. The other end of each wire is anchored in the ground at a distance of 9.54 m from the base of the pole. The pole makes a right angle with the ground. What is the length of each wire? 2. A bug crawls 2.25 m along the base of a wall. Upon reaching a corner, the bug's direction of travel changes from...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for a collision. 2. Calculating impulse using force vs. time curves. 3. Understanding the relationship between impulse and momentum. 4. Applying conservation of momentum for inelastic collisions. Apparatus: Aluminum track, track legs, two smart carts, two cart stops, and small black rectangular cart masses. Part A: Collision of a moving cart with a fixed cart cart 1 Cart stop stationary cart cart stop Consider the...
The following figure shows the kinematics and vertical component
of the ground reaction force during a vertical jump. On the figure,
indicate and explain the following events:
(1) Takeoff
(2) Peak vertical velocity
(3) Jump impulse
(4) What is the relationship between force and
acceleration?
Velocity Acceleration Force 1800-24 6 F0.6 120016 4 0.4 Body weight 600-8 2 0.2 0- 0 -600-8 IE-2 -0.2 0.2 0.4 0.6 0.8 Time (s)
Velocity Acceleration Force 1800-24 6 F0.6 120016 4 0.4 Body...
A 75-kg volleyball player performs a maximum-effort vertical jump with an initial velocity of 3 m/s. The player leaves the ground with an upright body position and also touches down with the same body position. Answer the following: ua A. How much will the player's center of mass (COM) travel in the air along the vertical direction during the ascending phase of the jump? Compute the maximum kinetic energy of the player during the jump. C. Compute the maximum potential...
N3M.12
between figure the acceleration arrow you should draw through each position dot during step 1 should point from the puck's position at that instant toward the table's center, since the Ca string's tension force acts in that direction.] (b) Check your work using the Newton program. N3M.12 In this problem, we will explore the necessary con- t ditions for uniform circular motion. (a) According to chapter N1, an object moving in a circle of radius rat constant speed llexperiences...
5:16 lLTE ) Done 1 of 5 Assessment #1 (Kinematics of a Particle) Rectilinear Motion (Straight linc Motion 3. The position of a point during the interval of time from r otor 6 is given by ** * m. (a) What is the maximum velocity during this interval of time, and at what time does it occur? (b) What is the acceleration when the velocity is a maximum? (20 m/s, 0 m/s 3. A test projectile is fired horizontally into...
1. KINEMATICS: Kickoff During kickoff for the Oakland Raiders, Sebastian Janikowski's powerful left leg launches the ball from the 30-yard line with the initial velocity of 30 m/s. a. Assuming no air resistance, can the ball reach the end of the field, i.e. travel at least 80 yards (73 m), resulting in a touch-back? Please explain (a yes or no answer is not sufficient) b. Assuming Mr. Janikowski chose the best possible angle for the kick, how long is the...
Question 7 is related to the force vs mass graph that is
provided and the first section of the excel sheet. Question 3 has
to do with the force bs acceleration graph and second section of
the excel sheet. The first two files are showing the equations that
are supposed to be used to find these answers. Any help would be
greatly appreciated.
I
mainly need assistance on number 1 and 2 now. The question with the
free body diagram...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for a collision. 2. Calculating impulse using force vs. time curves. 3. Understanding the relationship between impulse and momentum. 4. Applying conservation of momentum for inelastic collisions. Apparatus: Aluminum track, track legs, two smart carts, two cart stops, and small black rectangular cart masses. Part A: Collision of a moving cart with a fixed cart cart 1 Cart stop stationary cart cart stop Consider the...
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