3_Physics Homework - Chapter 5

3_Physics Homework - Chapter 5 - (b Let w be the weight of...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
(b) Let w be the weight of the astronaut. And F be the force exerted by the rocket on the astronaut. And let a be the acceleration experienced by the rocket. As the medical tests have shown that astronauts are in danger of blacking our acceleration greater than 4g, Hence Using the force equation: Therefore the force exerted on the astronaut is (c) The shortest time in which the rocket reached the speed of sound can be calculated as. Therefore, the shortest time in which the rocket reaches the speed of sound is EX 5.13 On September 8, 2004, the Genesis spacecraft crashed in the Utah desert because its parachute did not open. The 210- kg capsule hit the ground at 311 km/h and penetrated the soil to a depth of 81.0 cm. (a) Assuming it to be constant, what was its acceleration (in m/s 2 and in g’s) during the crash? (b) What force did the ground exert on the capsule during the crash? Express the force in newtons and as a mult iple of the capsule’s weight. (c) For how long did this force last? Use the kinematic information to find the acceleration of the capsule and the stopping time. Use Newton’s second law to find the force
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
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