# Quiz3 - from the edge of the barn does the snowball strike...

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

PHYS 2305 CHANG: Quiz 3, Spring 2009 Name (print)________________________________________________ TR9:30AM Due Friday, 2/13, at Test1 I have neither given nor received any unauthorized aid on this quiz. Pledge ______________________________________________ Instructions : Show your work to receive credit , and present your answers with 3 significant figures and proper units . 1. At t =0 car A and truck B are 180 m apart on a straight road. Starting from rest car A speeds up with a constant 8 m/s 2 acceleration. Truck B is traveling in the opposite direction with a constant speed of 16 m/s. How far away is car A from its starting point when the two vehicles pass each other? _______________________ 2. A snowball rolls off a barn roof that slopes downward at an angle of 30°. The edge of the roof is 15 m above the ground, and the snowball has a speed of υ 0 = 5 m/s as it rolls off the roof. How far
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: from the edge of the barn does the snowball strike the ground? _____________________ υ 0 50˚ A R 35 m H O A x 90º υ 30° 15 m 3. A projectile is launched with α = 50˚ and it lands at point A as shown. The maximum height of the projectile at the peak of its trajectory is H = 80 m. (a) Find the total time of flight to the landing point A . _____________________ (b) Find the range of motion R (horizontal distance) of the projectile. _____________________ 4. A small bead moves on a circular hoop of radius R = 2 m in the counterclockwise direction as shown. If the speed of the bead at point A (the lowest point on the path) is 1.2 m/s and it is slowing down at a rate of 0.54 m/s 2 , find the magnitude and direction of the acceleration of the bead at A . a = _____________________ β (measured from + x-axis) = ________________________...
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