n Section 2.8 we considered objects moving at constant
velocity-unchanging speed and unchanging direction.
Most motions, however, are not at constant velocity
because things speed up and slow down and change direction all the tim
Solutions to Open Response Homework 13: Practice test for Exam 2
Problem: A dump truck is sitting at the top of a hill, and its parking brake disengages. It rolls down a hill and,
after reaching the bottom (on flat ground) collide
Multiple-Choice Homework 10: Interactions
Problem 1: Which of the following is true about potential energy? (If both (a) and (b) are true, choose (c); if
neither is true, choose (d).)
(b) It can be converted entirely into kinetic energy
See the t
Multiple-Choice Homework 11: Interactions, part 2
Problem 1: True or false: the conversion of source energy into any other form of energy is always irreversible.
This is covered in Section 7.14.
Problem 2: Consider the following process:
Multiple-Choice Homework 12: Forces
Problem 1: What would be the average force exerted by cart 2 on cart 1 during the collision illustrated by the
velocity vs. time graph in Figure 8.2 (a), if the mass of cart 1 was 0.2 kg?
(c) 16 N
If you read t
Multiple-Choice Homework 15: Work
Problem 1: Consider the situation described in question 4 of the Self-Quiz at the end of Section 9.4 in your
textbook. What would the energy balance diagram look like if the system is limited to the cart alone?
Questions for the Drama Exam: Installment 1
Be prepared to write about a page on each of these questions. Ill add about two more questions
1. Describe the additions made to Bottoms story in the film version of MND that we saw in class,