Physics 113 –Morning 2008
Due June 3, 2008
Team #______________
Member 1__________________
Member 2__________________
Member 3__________________
Rules:
-Collaboration
between team members is encouraged, each member will
be responsible for one problem and may be asked to explain it.
-Each
member should present the solution on a blank sheet with her/his name on it;
solutions from each team are to be stapled together
-Solutions
should include “self-explained” diagrams/sketches, with minimal wording.
Presentation will count toward the problem grading.
1.- Design a method to calculate the height of the ceiling in the
lecture room by using ONLY a coin, and a stopwatch. Perform the method and
record results in the same page.
2.-
About the experiment of the car with a ball rolling frictionless at constant speed on a horizontal track, at some
point the ball get launched up vertically. Assume the ball density is high
enough to ignore air friction, give a detailed explanation of why the ball will
fall behind or in front of the car, indicate if your argument agrees with or
challenges against the assumption that motion along perpendicular directions
are independent. If you think the ball will fall back into the car, for this
extra credit, describe a different situation that shows the same point.
3.- A ball is dropped inside a train moving at constant velocity
of 15m/s in a horizontal direction. It took 1s to hit the floor. What is the
average velocity of the ball in that interval with respect to the ground?