Blog

An object travels around a horizontal circular path at varying tangential velocities. The total linear acceleration vectors at five different points are shown in the figure below. Note: the four nonzero vectors have equal length. At which of these points is the object’s angular velocity the largest?  

The above image shows the hip joint angle over the course of the gait cycle, which occurs over 1 second. What is the average angular velocity of the hip between maximum hip extension and maximum hip flexion? (Assume maximum hip flexion occurs at 80% of the gait cycle).

Please choose one of these three questions to answer. Your answer must be 400-500 words long. If you are coming up short, find ways to make your answer fuller. There is a word counter at the bottom of the entry box. Be sure you choose appropriate art examples for each question, for example, don’t discuss works of art that aren’t in your book or beyond 1945. You may use the entire semester’s worth of information from 1300-1945 (chapters 14-30) for these questions. If for some reason you chose a work of art that is one that I selected for the first half of the exam for your long answer essay, please don’t worry about it. You may absolutely use that example if that’s what you chose to discuss. I cannot penalize you for choosing something that you didn’t know would be on the exam. Frequently in the history of art, artists and architects have challenged established traditions. Select and fully identify two works that challenged established traditions. One example must have been produced before 1800. Discuss how and why each work constituted a significant challenge to accepted artistic conventions of its time. Self-portraiture provides a wide range of information about the artist in addition to physical appearance. Choose and fully identify two self-portraits, in any medium, each from a different art-historical period. Analyze how each self-portrait conveys information about the artist and his or her era. Throughout history, narrative has been used in art to communicate social, political, or religious meaning. Select and clearly identify two works of art that use narrative. One of your examples must date before 1800, and one must date after 1800. For each work, identify the content of the narrative and analyze how the work uses narrative to communicate social, political, or religious meaning.

Zero velocity can indicate a change in movement direction.

Assuming the femur (upper leg) is 30 cm long, what is the linear velocity of the knee during this time?

When velocity is at a maximum, what will acceleration be?

A ball is dropped straight down from an unknown height with an initial velocity of zero, and hit the ground 0.18 s later. Calculate the following variables:   A) Final velocity of the ball just prior to hitting the ground. B) Average velocity of the ball over the course of the drop. C) Height from which the ball was dropped. D) Average acceleration of the ball over the course of the drop.

Acceleration always acts in the direction of motion.

Which equation expresses the relationship between linear and angular velocity?

The is the main part of any song… it’s the part of the music that is usually the most recognizable and/or the one that might get stuck in your head.