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Question 3. A student jumps up vertically from a crouched position. At the highest point in...
A 165 lb student lands from a vertical jump and immediately jumps vertically again. The average...
A 165 lb student lands from a vertical jump and immediately jumps vertically again. The average ground reaction force is 1735 N which is applied for 0.33s. He was moving 1.2 m/s downwards when he first contacted the ground. What will his velocity be at takeoff? What will be his jump height?
A student with a mass of 50.1 kg jumps straight up in the air by using...
A student with a mass of 50.1 kg jumps straight up in the air by using her legs to apply an average force of 847 N to the ground for 0.389 s. Assume that the initial momentum of the student and the Earth are zero. (The mass of the Earth is 5.98·1024 kg.) What is the momentum of the student immediately after this impulse? (Convention: upwards is positive and downwards is negative.) What is the momentum of the Earth after...
A student with a mass of 58.1 kg jumps straight up in the air by using...
A student with a mass of 58.1 kg jumps straight up in the air by using her legs to apply an average force of 813 N to the ground for 0.265 s. Assume that the initial momentum of the student and the Earth are zero. (The mass of the Earth is 5.98·1024 kg.) a) What is the momentum of the student immediately after this impulse? (Convention: upwards is positive and downwards is negative.) b) What is the momentum of the...
A 90 kg student jumps off a bridge with a 8-m-long bungee cord tied to his...
A 90 kg student jumps off a bridge with a 8-m-long bungee cord tied to his feet. The massless bungee cord has a spring constant of 400 N/m. You can assume that the bungee cord exerts no force until it begins to stretch. How far below the bridge is the student's lowest point? How far below the bridge is the student's resting position after the oscillations have been fully damped?
A 65 kg kangaroo jumps vertically to a height of 1.8 m. Assume that there is...
A 65 kg kangaroo jumps vertically to a height of 1.8 m. Assume that there is very little horizontal motion, and that air resistance is negligible. a) What is its potential energy at the top of its jump? b) What must its kinetic energy have been at the beginning of the jump, the moment after its feet left contact with the ground? c) Based on your answer from (b), what was the kangaroo's initial upward velocity, just after leaving the...
A 13-kg dog jumps up in the air to catch a ball. The dog's center of...
A 13-kg dog jumps up in the air to catch a ball. The dog's center of mass is normally 0.20 m above the ground, and he is 0.50 m long. The lowest he can get his center of mass is 0.10 m above the ground, and the highest he can get it before he can no longer push against the ground is 0.30 m . Part A If the maximum force the dog can exert on the ground in pushing...
Problem 15.48 A 90 kg student jumps off a bridge with a 12-m-long bungee cord tied...
Problem 15.48 A 90 kg student jumps off a bridge with a 12-m-long bungee cord tied to his feet. The massless bungee cord has a spring constant of 410 N/m. You can assume that the bungee cord exerts no force until it begins to stretch. Part A How far below the bridge is the student's lowest point? Express your answer with the appropriate units. ? MÅ Value O Units [1] = Submit Previous Answers Request Answer X Incorrect; Try Again;...
Please answer all parts especially C and D. Thanks Before Christmas a 65kg student consumes 2500...
Please answer all parts especially C and D. Thanks
Before Christmas a 65kg student consumes 2500 Cal each day and stays at the same weight. For three days in a row while visiting her parents she eats 3500 Cal and, wanting to keep from gaining weight decides to work off" the excess by jumping up and down at the Christmas tree. With each jump she accelerates to a speed of 3.2 m/s before leaving the ground. a) How high will...
1. A very thoughtful physics student takes her younger sibling to the arcade to play skeeball. She estimates the ma...
1. A very thoughtful physics student takes her younger sibling to the arcade to play skeeball. She estimates the mass of the skee ball to be about 0.5 kg and the height of the fifty-point ring to be about 1 m above the position from which the ball is released. a. How much gravitational potential energy will the ball have if it hits the fifty-point ring at the highest point? LOL b. How much kinetic energy does the ball need...
Simone, a 47 kg gymnast, is performing the last tumbling pass of her floor routine. The...
Simone, a 47 kg gymnast, is performing the last tumbling pass of
her floor routine. The tumbling pass involves running as fast as
possible then jumping into the air to complete a double layout with
a twist (this exact maneuver, the double layout with a twist, is
not important, but a photo is provided on Canvas to show you what
this maneuver is). The instant before she jumps into the air, her
center of mass (COM) is 0.90 m above...
Problem 15.48 A 90 kg student jumps off a bridge with a 12-m-long bungee cord tied to his feet. The massless bungee cord has a spring constant of 410 N/m. You can assume that the bungee cord exerts no force until it begins to stretch. Part A How far below the bridge is the student's lowest point? Express your answer with the appropriate units. ? MÅ Value O Units [1] = Submit Previous Answers Request Answer X Incorrect; Try Again;...
Please answer all parts especially C and D. Thanks
Before Christmas a 65kg student consumes 2500 Cal each day and stays at the same weight. For three days in a row while visiting her parents she eats 3500 Cal and, wanting to keep from gaining weight decides to work off" the excess by jumping up and down at the Christmas tree. With each jump she accelerates to a speed of 3.2 m/s before leaving the ground. a) How high will...
1. A very thoughtful physics student takes her younger sibling to the arcade to play skeeball. She estimates the mass of the skee ball to be about 0.5 kg and the height of the fifty-point ring to be about 1 m above the position from which the ball is released. a. How much gravitational potential energy will the ball have if it hits the fifty-point ring at the highest point? LOL b. How much kinetic energy does the ball need...
Simone, a 47 kg gymnast, is performing the last tumbling pass of
her floor routine. The tumbling pass involves running as fast as
possible then jumping into the air to complete a double layout with
a twist (this exact maneuver, the double layout with a twist, is
not important, but a photo is provided on Canvas to show you what
this maneuver is). The instant before she jumps into the air, her
center of mass (COM) is 0.90 m above...
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