{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Discussion-13

# Discussion-13 - dance as a couple in virtue of the law of...

This preview shows pages 1–6. Sign up to view the full content.

Impulse and Momentum Di i #13 Ch 7 4 & 7 5 Discussion #13 – Ch. 7.4 & 7.5 Physics 125 – Fall 2010 Dr. Mike Melnichuk [email protected] Office: 2409 Randall Lab [email protected] Office Hours: 2:00 4:00 / Mon & Tue in Rm 1416 Randall Lab Office Hours: 2:00 – 4:00 / Mon. & Tue. in Rm. 1416 Randall Lab.

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

View Full Document
Example #1 Two disco dancers collide in midair. Bob is 60 kg and was going vertically North at 0.5 m/s just before the collision. Alice is 40 kg and was going horizontally East at 1.0 m/s just before the collision. After the collision they dance as a couple in virtue of the m A. 1.5 law of momentum conservation. What is the magnitude of the couple’s velocity just after the collision? s m B. 0.5 s m C. 1 s m D. 2 s E. Bob really thought that he has impressed Alice with his . moves
Test #1 Same problem as above - Two disco dancers collide in midair. Bob is 60 kg and was going vertically North at 0.5 m/s just before the collision. Alice is 40 kg and was going horizontally East at 1.0 m/s just before the collision. After the collision they dance as a couple in virtue of the law of momentum conservation. What is the

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

View Full Document

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: dance as a couple in virtue of the law of momentum conservation. What is the angle the couple makes with the west-east direction ? 126 ° A. 126 B. 98 ° C. 25 ° D. 37 ° E. Instead, Alice thought that Bob was as flexible as an . .. . ironing board Example #2 Ball A of mass 1 kg collides elastically (but not head-on) with ball B of mass 2 kg which is initially at rest. Find the final speed of ball A. m A. 2.6 s m B. 9.5 s m C. 3.4 s m D. 4.8 s m E. 7.1 . s Test #2 Ball A of mass 1 kg collides elastically (but not head-on) with ball B of mass 2 kg which is initially at rest. Find the final speed of ball B. m A. 2.6 s m B. 9.5 s m C. 3.4 s m D. 4.8 s m E. 7.1 . s Test #3 A ball of mass 1 kg collides elastically (but not head-on) with the floor. What is the magnitude of the impulse imparted by the ball to the floor ? NOTE : only the vertical component of the ball’s momentum changes during the impact. m A. 12 kg s m B. 85 kg s m C. 64 kg s m D. 96 kg s m E. 78 kg . s...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern