Homework

Engineering 111 - Homework 12D

Instructions: Complete this form and click submit. The answers will be posted on the course home page after the due date and before the next exam. If you want to change any of your answers after you click submit, then go back and give your answers again and click submit.

Your Name: e.g. John Doe

Your Campus ID: e.g. 12345678

Your SFA Email Address: e.g. doejd@titan.sfasu.edu

Due Date

Refer to the diagram below when answering the first two questions. This diagram represents a multiflash photograph of an object moving along a horizontal surface. The positions as indicated in the diagram are separated by equal time intervals. The first flash occurred just as the object started to move and the last flash just as it came to rest.

1. Which of the following graphs best represents the object's velocity as a function of time?

2. Which of the following graphs best represents the object's acceleration as a function of time?

3. The velocity of an object as a function of time is shown in the graph below.

Which graph below best represents the net force vs time relationship for this object?

Refer to the diagram below when answering the next three questions. The diagram depicts a block sliding along a frictionless ramp. The eight numbered arrows in the diagram represent directions to be referred to when answering the questions.

4. The direction of the acceleration of the block, when in position I, is best represented by which of the arrows in the diagram?
(A) 1
(B) 2
(C) 4
(D) 5
(E) None of the arrows; the acceleration is zero.

5. The direction of the acceleration of the block, when in position II, is best represented by which of the arrows in the diagram?
(A) 1
(B) 3
(C) 5
(D) 7
(E) None of the arrows; the acceleration is zero.

6. The direction of the acceleration of the block (after leaving the ramp) at position III, is best represented by which of the arrows in the diagram?
(A) 2
(B) 3
(C) 5
(D) 6
(E) None of the arrows; the acceleration is zero.

7. Build a bridge that will allow the train to successfully travel across your bridge for just Level 4 of Bridge Builder. After you have completed this level select 'Done' to the left and click 'Submit' below for this homework set.

Your Name:	e.g. John Doe
Your Campus ID:	e.g. 12345678
Your SFA Email Address:	e.g. doejd@titan.sfasu.edu
Due Date

	Refer to the diagram below when answering the first two questions. This diagram represents a multiflash photograph of an object moving along a horizontal surface. The positions as indicated in the diagram are separated by equal time intervals. The first flash occurred just as the object started to move and the last flash just as it came to rest. 1. Which of the following graphs best represents the object's velocity as a function of time?
	2. Which of the following graphs best represents the object's acceleration as a function of time?
	3. The velocity of an object as a function of time is shown in the graph below. Which graph below best represents the net force vs time relationship for this object?
	Refer to the diagram below when answering the next three questions. The diagram depicts a block sliding along a frictionless ramp. The eight numbered arrows in the diagram represent directions to be referred to when answering the questions. 4. The direction of the acceleration of the block, when in position I, is best represented by which of the arrows in the diagram? (A) 1 (B) 2 (C) 4 (D) 5 (E) None of the arrows; the acceleration is zero.
	5. The direction of the acceleration of the block, when in position II, is best represented by which of the arrows in the diagram? (A) 1 (B) 3 (C) 5 (D) 7 (E) None of the arrows; the acceleration is zero.
	6. The direction of the acceleration of the block (after leaving the ramp) at position III, is best represented by which of the arrows in the diagram? (A) 2 (B) 3 (C) 5 (D) 6 (E) None of the arrows; the acceleration is zero.
	7. Build a bridge that will allow the train to successfully travel across your bridge for just Level 4 of Bridge Builder. After you have completed this level select 'Done' to the left and click 'Submit' below for this homework set.