What is the direction of the velocity and acceleration vectors of a baseball that is rising upward towards its highest point above ground?
Answers
Answer:
The Free Fall Concept Builder is comprised of bank of 43 Questions organized into 18 Question Groups and spread across three different activities. Each activity has a slightly different emphasis but all pertain to the topic of velocity and acceleration of a free-falling object. The first activity - Know Your Ds - focuses on the skill of determining the distance traveled and the displacement of an object from the examination of its position-time graph. The second activity - Know Your V - focuses on the skill of determining the velocity of an object from a slope calculation using a position-time graph. The third activity - Know Your D, V, P, and T - consists of slightly more challenging questions in which learners must read coordinates to determine displacement, calculate slopes to determine velocities, and use slopes and coordinates to extrapolate a line on a graph to predict a time or position. Questions are grouped with questions in the same group requiring a very similar skill or graph. If a learner misses a question within Question Group 1, then another question within the same group will be presented to the learner at a later time.
The three activities in this Concept Builder are summarized as follows:
Describing Free Fall: Question Groups 1-6
Speedometer: Question Groups 7-12
It's About Time: Question Groups 13-18
The questions and graphs used in this Concept Builder are shown below. Teachers are encouraged to view the questions in order to judge which activity is most appropriate for their classes. For instance, teachers of honors classes may find that all questions are appropriate. On the other hand, teachers of lower level or middle school classes may find that the Know Your D, V, P, and T activity is a bit too difficult for the bulk of their students.
The Physics Classroom grants teachers and other users the right to print these questions for private use. Users are also granted the right to copy the text and modify it for their own use. However, this document should not be uploaded to other servers for distribution to and/or display by others. The Physics Classroom website should remain the only website or server from which this document is distributed or displayed. We also provide a PDF that teachers can use under the same conditions.Activity 1: Describing Free Fall
Question Group 1
Question 1
Which of the dot diagrams best describe the motion of a free-falling object that is dropped from rest?
Diagram A
Diagram B
Diagram C
Question 2
Which of the dot diagrams best describe the motion of a free-falling object that is dropped from rest?
Diagram A
Diagram B
Diagram C
Question 3
Which of the dot diagrams best describe the motion of a free-falling object that is dropped from rest?
Diagram A
Diagram B
Diagram C
Question Group 2
Question 4
A paint brush is dropped from the top of a tall ladder and free falls to the ground. What changes, if any, would be observed of the velocity and the acceleration of the brush as it falls? Pick the two answers.
The velocity increases.
The velocity decreases.
The velocity remains a constant value.
The acceleration increases.
The acceleration decreases.
The acceleration remains a constant value.
Question 5
A textbook is dropped from the second story stairs and free falls to the ground. What changes, if any, would be observed of the velocity and the acceleration of the textbook as it falls? Pick two answers.
The velocity increases.
The velocity decreases.
The velocity remains a constant value.
The acceleration increases.
The acceleration decreases.
The acceleration remains a constant value.
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