An athlete with a mass of 60.5 kg is in a cross country race, and at...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
An athlete with a mass of 60.5 kg is in a cross country race, and at one instant he has a speed of 5.40 m/s. (a) What is his kinetic energy at this instant? KE = (b) If he wishes to doubles his speed to reach the finish line, his kinetic energy will change by what factor? KE+ KE The center fielder for the school's baseball team throws a 0.150-kg baseball towards home plate at a speed of 32.0 m/s and an initial angle of 40.0. What is the kinetic energy of the baseball at the highest point of its trajectory? J Supporting Materials Physical Constants A.022. TEACHER Consider a system of a cliff diver and the earth. The gravitational potential energy of the system decreases by 28,000 J as the diver drops to the water from a height of 34.0 m. Determine her weight in newtons. Submit Answer N 2. [-/1 Points] DETAILS OSCOLPHYS1 7.P.026.WA. A pendulum bob with a mass of 0.39 kg is attached to a 1.5 m long string as shown. 8 1.5 m MY NOTES ASK YOUR TEACHER B As the pendulum bob swings from point A, where the angle = 40, to point B at the bottom of its arc, determine the change in the gravitational potential energy of the pendulum bob-earth system. Supporting Materials Physical Constants Submit Answer 3. [-/3 Points] DETAILS OSCOLPHYS1 7.P.025.WA. MY NOTES ASK YOUR TEACHER A child with a weight of 130 N swings on a playground swing attached to 2.20 m long chains. What is the gravitational potential energy (in J) of the child-earth system relative to the child's lowest position at the following times? (a) when the chains are horizontal ] (b) when the chains make an angle of 27.0 with respect to the vertical (c) when the child is at his lowest position Supporting Materials Physical Constants Submit Answer 4. [-/4 Points] DETAILS OSCOLPHYS2016 7.3.WA.024. MY NOTES ASK YOUR TEACHER While leaning out a window that is 5.9 m above the ground, you drop a 0.60 kg basketball to a friend at ground level. Your friend catches the ball at a height of 1.8 m above the ground. Determine the following. (a) the amount of work done (in J) by the force of gravity on the ball (b) the gravitational potential energy (in J) of the ball-earth system, relative to the ground when it is released (c) the gravitational potential energy (in J) of the ball-earth system, relative to the ground when it is caught (d) the ratio of the change (PE - PE) in the gravitational potential energy of the ball-earth system to the work done on the ball by the force of gravity W An athlete with a mass of 60.5 kg is in a cross country race, and at one instant he has a speed of 5.40 m/s. (a) What is his kinetic energy at this instant? KE = (b) If he wishes to doubles his speed to reach the finish line, his kinetic energy will change by what factor? KE+ KE The center fielder for the school's baseball team throws a 0.150-kg baseball towards home plate at a speed of 32.0 m/s and an initial angle of 40.0. What is the kinetic energy of the baseball at the highest point of its trajectory? J Supporting Materials Physical Constants A.022. TEACHER Consider a system of a cliff diver and the earth. The gravitational potential energy of the system decreases by 28,000 J as the diver drops to the water from a height of 34.0 m. Determine her weight in newtons. Submit Answer N 2. [-/1 Points] DETAILS OSCOLPHYS1 7.P.026.WA. A pendulum bob with a mass of 0.39 kg is attached to a 1.5 m long string as shown. 8 1.5 m MY NOTES ASK YOUR TEACHER B As the pendulum bob swings from point A, where the angle = 40, to point B at the bottom of its arc, determine the change in the gravitational potential energy of the pendulum bob-earth system. Supporting Materials Physical Constants Submit Answer 3. [-/3 Points] DETAILS OSCOLPHYS1 7.P.025.WA. MY NOTES ASK YOUR TEACHER A child with a weight of 130 N swings on a playground swing attached to 2.20 m long chains. What is the gravitational potential energy (in J) of the child-earth system relative to the child's lowest position at the following times? (a) when the chains are horizontal ] (b) when the chains make an angle of 27.0 with respect to the vertical (c) when the child is at his lowest position Supporting Materials Physical Constants Submit Answer 4. [-/4 Points] DETAILS OSCOLPHYS2016 7.3.WA.024. MY NOTES ASK YOUR TEACHER While leaning out a window that is 5.9 m above the ground, you drop a 0.60 kg basketball to a friend at ground level. Your friend catches the ball at a height of 1.8 m above the ground. Determine the following. (a) the amount of work done (in J) by the force of gravity on the ball (b) the gravitational potential energy (in J) of the ball-earth system, relative to the ground when it is released (c) the gravitational potential energy (in J) of the ball-earth system, relative to the ground when it is caught (d) the ratio of the change (PE - PE) in the gravitational potential energy of the ball-earth system to the work done on the ball by the force of gravity W
Expert Answer:
Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
Posted Date:
Students also viewed these physics questions
-
4. If we use plus and minus signs to indicate the directions of velocity and acceleration in one dimension, in which of the following situations does the object speed up? a. negative velocity and...
-
The business of Whirlwind Limited is that of a travel agency. The companys articles are based on the Model Articles. The managing director of the company is Liam and the company has three other...
-
In Pissarides's view of labor markets (job matching model), the focus is on finding a good ________. a. level of TFP (A) b. supply of money (M). c. match d. Wage
-
Let fn(x) := nx/(1 + nx2) for x A := [0, ). Show that each fn is bounded on A, but the point wise limit f of the sequence is not bounded on A. Does (fn) converge uniformly to f on A?
-
Your dog runs off in a straight line for 1 2 0 m , turns and runs straight back and continues for 3 4 m behind you and stops. It takes 2 5 s for the dog to complete its journey from start to finish....
-
The general solution to Stokes flow in 2D Cartesian coordinates. For the 2D case the governing equation is \(abla^{4} \psi=0\). The operator \(abla\) may be applied either in Cartesian \((x, y)\) or...
-
The company reported the following information for the year: Ending work-in-process inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . $100,000 Depreciation on factory building . . . ....
-
8.4 Static Equilibrium -3L/4- L/4- F -Axis of rotation y mg F2 56. Calculate If the two parents in Figure 8.19 exert upward forces of 18 N on the left end of the plank and 71 N on the right end, how...
-
What are the important factors that I consider when choosing a credit card
-
S Book Print Activity Cost Pool Labour related Machine related Machine setups Production orders Product testing Packaging ferences General factory Estimated Overhead Cost $ 60,000 80,000 Expected...
-
What role does team reflexivity play in fostering effective team-building processes, including mechanisms for continuous reflection, adaptation, and learning, to enhance team dynamics and...
-
Discuss one nursing action you might incorporate to improve cultural competence in your organization. Discuss one nursing action you might incorporate to improve cultural competence in your...
-
Describe the cost recovery methods for recovering the cost of personal property, real property, intangible assets, and natural resources.
-
Summarize each of them 1 - Avoiding Plagiarism 2 - Paraphrasing and avoiding plagiarism
-
Write a note on Annotated Bibliography: Attachment theory. 1. How to Build a Secure Attachment Bond with Your Baby- Parenting Tips for Creating a Strong Attachment Relationship. 2. What Determines A...
-
On April 29, 2015, Auk Corporation acquires 100% of the outstanding stock of Amazon Corporation (E & P of $750,000) for $1.2 million. Amazon has assets with a fair market value of $1.4 million (basis...
-
On December 1, 2023, Rebecca Ward, a single taxpayer, comes to you for tax advice. At the end of every year, she donates \($5,000\) to charity. She has no other itemized deductions. This year, she...
-
Kelly and Chanelle Chambers, ages 47 and 45, are married and live at 584 Thoreau Drive, Boston, MA 59483. Kellys Social Security number is 111-11-1111 and Chanelles is 222-22-2222. The Chambers have...
-
Following is a list of information for Peter and Amy Jones for the current tax year. Peter and Amy are married and have three children, Aubrynne, Bryson, and Caden. They live at 100 Main Street,...
Study smarter with the SolutionInn App