{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

2011test2v1 - Phys 100 Fall 2011 Concepts of Physics Class...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Phys 100 Fall 2011 Concepts of Physics: Class Test II 31 October 2011 Name: Total: /50 Instructions There are 9 questions on 5 pages. Show your reasoning and calculations and always justify your answers. Physical constants and useful formulae speed = distance traveled time elapsed s = d t acceleration = change in velocity time elapsed a = v t distance = 1 2 × acceleration × time 2 d = 1 2 × a × t 2 final speed = initial speed + acceleration × time v f = v i + a × t acceleration = net force mass a = F m earth’s gravitational force = mass × 9 . 8 F grav earth = m × 9 . 8 KE = 1 2 × mass × (speed) 2 KE = 1 2 m × v 2 gravPE = mass × 9 . 8 × height PE = m × 9 . 8 × h power = energy gain time elapsed P = E t efficiency = useful energy output energy input ε = E output E input frequency = 1 time per cycle f = 1 T wave speed = wavelength × frequency s = λ × f
Image of page 1

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

View Full Document Right Arrow Icon
Question 1 Two balls are thrown upward above the ground. Ball A has mass 4 kg and ball B has mass 2 kg . At a given moment their positions are as illustrated and ball A moves with speed 8 m/s while ball B moves with speed 10 m/s.
Image of page 2
Image of page 3
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