07_InstSolManual_PDF_Part10 - 7-10 Chapter 7 7.45 Set Up...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
7.45. Set Up: Let be the angle of the initial speed above the horizontal. In parts (a)-(c), has values of and respectively. Use with and Let and this gives Solve: (a)-(d) (e) Since K and U are both proportional to the weight w divides out of the expression and is unaffected by a change in weight. Reflect: The initial kinetic energy depends only on the initial speed and is independent of the direction of the initial velocity. 7.46. Set Up: For part (a) use At the maximum height, so Let and and note that this gives In part (b) use Solve: (a) (b) On Io, On earth, g , and thus the potential energy, is roughly five times greater: 7.47. Set Up: Use Let and and note that while at the maximum height. Consequently, conservation of energy becomes Solve: (a) (b) (c) The human can jump to a height of To attain this height, he would require a takeoff speed of: (d) The human’s kinetic energy per kilogram, (e) Reflect: The flea stores the energy in its tensed legs.
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern