8. A 100 kg person performs a maximum vertical jump with an initial velocity of 4...
8. A 100 kg person performs a maximum vertical jump with an initial velocity of 4 m/s. (Rounding to the nearest integer) a. What is the performer’s maximum kinetic energy during the jump? [A] b. What is the performer’s maximum potential energy during the jump? [B] c. The performer’s center of mass elevated ___[C]____ cm during the jump. d. How much power the performer must generate if she accelerates to 4 m/s in 0.2 s? [D]
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8. A 100 kg person performs a maximum vertical jump with an
initial velocity of 4...
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...
to stop a 90 kg basketball player landing from a jump with a downward vertical...
to stop a 90 kg basketball player landing from a jump with a downward vertical How much work is required velocity of 3.48 m/s at the point of ground contact? Assume the basketball player has no potential energy, only kinetic energy. (3 points) How much force is required if the basketball player (Question #2) lands with a 'hard' or 'soft' landing? a For 'soft' landing assume the basketball player's center of mass is displaced 0.65 m. (2 point) b....
A 132 lb. (60 kg) person does a standing vertical jump. Starting from rest, she jumps...
A 132 lb. (60 kg) person does a standing vertical jump. Starting from rest, she jumps vertically and reaches 70 cm (= 0.7m). The push-off phase takes 0.5 seconds. After being airborne, the landing takes 0.5 seconds before she comes to rest. How much mechanical work did the leg muscles produce during the push-off?
A 70 kg person can achieve the maximum speed of 2.5 m/s while running a 100...
A 70 kg person can achieve the maximum speed of 2.5 m/s while running a 100 m dash. Treat the person as a point particle. a. At this speed, what is the person's kinetic energy? Express your answer with the appropriate units. b. To what height above the ground would the person have to climb in a tree to increase his gravitational potential energy by an amount equal to the kinetic energy you calculated in part A? Express your answer...
Explore A baseball is thrown from the top of a tall building with an initial velocity...
Explore A baseball is thrown from the top of a tall building with an initial velocity of 10 m/s from a height of h= 11.5 m above the ground. Find its speed when it reaches the ground (a) if its launch angle is 37°, and (b) if it is launched horizontally. Conceptualize As the baseball moves upward and to the right, the force of gravity accelerates it downward. The vertical component of its velocity decreases in magnitude until the baseball...
A springboard diver with a weight of wt 110 lbs performs a jump from a s...
A springboard diver with a weight of wt 110 lbs performs a jump from a s 10 m diving platform. Her COG is d - 0.8 m above the platform surface. a) What is her potential energy before takeoff. (NOTE: Consider the position of the COG for your calculations). b) Assuming she jumps feet-first, what will be the diver's speed (in mph) the moment right before her feet enter the water? (2 pts.) (2 pies.)
A 110-kg basketball player can jump a vertical distance of 1.3 meters (approx. 4 feet). For...
A 110-kg basketball player can jump a vertical distance of 1.3 meters (approx. 4 feet). For this entire problem, assume that the athlete has NO horizontal motion. (Ignore air resistance.) 6. (2 pts.) What must be the player's initial vertical velocity as he leaves the ground? A. 3.4m/s B. 5.0 m/s D. 9.2 m/s E II m/s C. 7.6 m/s 7. (I pt.) At the moment the athlete reaches his maximum height, which of the following is/are equal to zere?...
A 1.2 kg object on a vertical spring with k+ 500 N/m is compressed from its...
A 1.2 kg object on a vertical spring with k+ 500 N/m is compressed from its equilibrium position. Once it is released, the mass is seen to have a velocity of 1.4 m/s at a position of 0.1 m from the equilibrium. a.) Determine the equation for this oscillation. b.) What is the maximum speed? c.) What is the maximum acceleration? d.) At what position from the equilibrium does the potential energy equal the kinetic energy?
Choose the Correct Answer: 1. A skier leaves a ski jump with a horizontal velocity of...
Choose the Correct Answer: 1. A skier leaves a ski jump with a horizontal velocity of 27.0 m/s (and no vertical velocity component). The skier lands 2.50 seconds later. What is the magnitude of the skier's displacement during the jump (a) 67.5 m (b) 98.2 m (c) 74.1 m (d) 30.7 m 2. The x and y positions (in meters) of a particle are given by: x(t) 253 t, and y(t)-12.0 t2+ 155 t100. The speed of the particle at...
135° Figure skater Michelle Kwan performs a triple jump. She rotates around her longitudinal axis three...
135° Figure skater Michelle Kwan performs a triple jump. She rotates around her longitudinal axis three times while in the air. The time it takes to complete the jump from takeoff to landing is 0.6 sec. What was her average angular speed for this jump? Express your answer in degrees and radians. (2 pts) Dbao g ni) vloolo l d A discus thrower begins a throwing motion by spinning at an angular velocity of 3.5rad/s. The discus thrower's angular velocity...
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...
to stop a 90 kg basketball player landing from a jump with a downward vertical How much work is required velocity of 3.48 m/s at the point of ground contact? Assume the basketball player has no potential energy, only kinetic energy. (3 points) How much force is required if the basketball player (Question #2) lands with a 'hard' or 'soft' landing? a For 'soft' landing assume the basketball player's center of mass is displaced 0.65 m. (2 point) b....
A springboard diver with a weight of wt 110 lbs performs a jump from a s 10 m diving platform. Her COG is d - 0.8 m above the platform surface. a) What is her potential energy before takeoff. (NOTE: Consider the position of the COG for your calculations). b) Assuming she jumps feet-first, what will be the diver's speed (in mph) the moment right before her feet enter the water? (2 pts.) (2 pies.)
A 110-kg basketball player can jump a vertical distance of 1.3 meters (approx. 4 feet). For this entire problem, assume that the athlete has NO horizontal motion. (Ignore air resistance.) 6. (2 pts.) What must be the player's initial vertical velocity as he leaves the ground? A. 3.4m/s B. 5.0 m/s D. 9.2 m/s E II m/s C. 7.6 m/s 7. (I pt.) At the moment the athlete reaches his maximum height, which of the following is/are equal to zere?...
Choose the Correct Answer: 1. A skier leaves a ski jump with a horizontal velocity of 27.0 m/s (and no vertical velocity component). The skier lands 2.50 seconds later. What is the magnitude of the skier's displacement during the jump (a) 67.5 m (b) 98.2 m (c) 74.1 m (d) 30.7 m 2. The x and y positions (in meters) of a particle are given by: x(t) 253 t, and y(t)-12.0 t2+ 155 t100. The speed of the particle at...
135° Figure skater Michelle Kwan performs a triple jump. She rotates around her longitudinal axis three times while in the air. The time it takes to complete the jump from takeoff to landing is 0.6 sec. What was her average angular speed for this jump? Express your answer in degrees and radians. (2 pts) Dbao g ni) vloolo l d A discus thrower begins a throwing motion by spinning at an angular velocity of 3.5rad/s. The discus thrower's angular velocity...
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