Lab
Video Lab: Ball Bouncing Across a Stage
Printer Friendly Version
This lab is based on a
Direct Measurement Video
called
Ball Bouncing Across a Stage
released on the
Science Education Research Center
(SERC) website. The copyright for this video belongs to Independent School District 197 in Mendota Heights MN. The project is partially funded by a
National Science Foundation Grant (#1245268)
awarded in September 2013.
The following lab directions were designed for use in my Honors Physics I class and only represent one method of analyzing the data provided in the video.
Note that this video was filmed at _____ frames per second. Since there is no stopwatch feature, you will have to use the frame rate to determine time differences.
NOTE: when projectiles are moving both forward (horizontally) and up/down (vertically) the values of their velocities are NOT RELATED. That is, the projectile’s horizontal speed does NOT influence, in any way, the instantaneous values of any of its vertical velocities.
Part I. Horizontal Motion
When the video opens, it is on frame:+0. Press play and view the entire scenario. Note the following special frames:
On frame:+64, the ball is centered on the right vertical post.
On frame:+170, the ball is center on the left vertical post.
(a) Determine the amount of time in seconds that passes between frame:+64 and frame:+170. Show your calculations on your paper.
(b) Calculate the horizontal speed of the ball (in m/sec) as it travelled between the poles. Show your calculations on your paper.
Refer to the following information for the next two questions.
After initially scaling your screen, do not make any changes to its size during this section.
(c) Use a ruler to measure the length of the distance between the poles, labelled in magenta as 3 meters. Record your answer to the nearest 10th of a centimeter
Calculate the conversion factor between your centimeter measurement and an actual meter on the physical stage. Show your work on your paper.
Part II. Vertical Motion
(d) Now, using the same ruler step to frame+64 and measure the distance between the base of the yellow (right) pole and the base of the green ball to the nearest 10th of a centimeter.
Convert your vertical measurement from centimeters to meters.
(e) Now, using the same ruler step to frame+170 and measure the distance between the base of the beige (left) pole and the base of the green ball to the nearest 10th of a centimeter.
Convert your vertical measurement from centimeters to meters.
You are now going to use the kinematics equations for uniformly accelerated motion to calculate the ball's vertical displacement, the ball's initial vertical velocity, and the ball's final vertical velocity.
At this junction in the lab you have the measured and calculated the following data.
a = -9.8 m/sec
^{2}
t = (answer to part a - in seconds)
h
_{o}
= (answer to part d - in meters)
h
_{f}
= (answer to part e - in meters)
Refer to the following information for the next five questions.
Analysis
(f) What was the ball's net vertical displacement between frame+64 and frame+170.
(g) Determine the green ball’s initial vertical velocity in m/sec as it passed in front of the yellow (right) pole. Show your calculations on your paper.
(h) Determine the green ball’s final vertical velocity in m/sec as it passed in front of the beige (left) pole. Show your calculations on your paper.
(i) Step through the video between frame:+64 and frame:+170 and determine the frame number when the ball reached its apex.
Is the frame number in (i) half way between frame:+64 and frame:+170?
yes
no
Refer to the following information for the next question.
Conclusion: You are now going to discuss the inter-relationships between your answers obtained during the Analysis section of the lab.
Based on your answers to the questions f through I, explain why v
_{o}
and v
_{f}
should
NOT
be equal.
Related Documents
Lab:
Labs -
A Photoelectric Effect Analogy
Labs -
Acceleration Down an Inclined Plane
Labs -
Ballistic Pendulum: Muzzle Velocity
Labs -
Coefficient of Friction
Labs -
Collision Pendulum: Muzzle Velocity
Labs -
Conservation of Momentum
Labs -
Cookie Sale Problem
Labs -
Flow Rates
Labs -
Freefall Mini-Lab: Reaction Times
Labs -
Freefall: Timing a Bouncing Ball
Labs -
Galileo Ramps
Labs -
Gravitational Field Strength
Labs -
Home to School
Labs -
InterState Map
Labs -
LAB: Ramps - Accelerated Motion
Labs -
LabPro: Newton's 2nd Law
Labs -
LabPro: Uniformly Accelerated Motion
Labs -
Mass of a Rolling Cart
Labs -
Moment of Inertia of a Bicycle Wheel
Labs -
Monkey and the Hunter Animation
Labs -
Monkey and the Hunter Screen Captures
Labs -
Projectiles Released at an Angle
Labs -
Ramps: Sliding vs Rolling
Labs -
Range of a Projectile
Labs -
Roller Coaster, Projectile Motion, and Energy
Labs -
Rube Goldberg Challenge
Labs -
Target Lab: Ball Bearing Rolling Down an Inclined Plane
Labs -
Terminal Velocity
Labs -
Video LAB: A Gravitron
Labs -
Video LAB: Ball Re-Bounding From a Wall
Labs -
Video Lab: Cart Push #2 and #3
Labs -
Video Lab: Falling Coffee Filters
Labs -
Video Lab: Two-Dimensional Projectile Motion
Resource Lesson:
RL -
Accelerated Motion: A Data Analysis Approach
RL -
Accelerated Motion: Velocity-Time Graphs
RL -
Analyzing SVA Graph Combinations
RL -
Average Velocity - A Calculus Approach
RL -
Chase Problems
RL -
Chase Problems: Projectiles
RL -
Comparing Constant Velocity Graphs of Position-Time & Velocity-Time
RL -
Constant Velocity: Position-Time Graphs
RL -
Constant Velocity: Velocity-Time Graphs
RL -
Derivation of the Kinematics Equations for Uniformly Accelerated Motion
RL -
Derivatives: Instantaneous vs Average Velocities
RL -
Directions: Flash Cards
RL -
Freefall: Horizontally Released Projectiles (2D-Motion)
RL -
Freefall: Projectiles in 1-Dimension
RL -
Freefall: Projectiles Released at an Angle (2D-Motion)
RL -
Monkey and the Hunter
RL -
Summary: Graph Shapes for Constant Velocity
RL -
Summary: Graph Shapes for Uniformly Accelerated Motion
RL -
SVA: Slopes and Area Relationships
RL -
Vector Resultants: Average Velocity
Review:
REV -
Test #1: APC Review Sheet
Worksheet:
APP -
Hackensack
APP -
The Baseball Game
APP -
The Big Mac
APP -
The Cemetary
APP -
The Golf Game
APP -
The Spring Phling
CP -
2D Projectiles
CP -
Dropped From Rest
CP -
Freefall
CP -
Non-Accelerated and Accelerated Motion
CP -
Tossed Ball
CP -
Up and Down
NT -
Average Speed
NT -
Back-and-Forth
NT -
Crosswinds
NT -
Headwinds
NT -
Monkey Shooter
NT -
Pendulum
NT -
Projectile
WS -
Accelerated Motion: Analyzing Velocity-Time Graphs
WS -
Accelerated Motion: Graph Shape Patterns
WS -
Accelerated Motion: Practice with Data Analysis
WS -
Advanced Properties of Freely Falling Bodies #1
WS -
Advanced Properties of Freely Falling Bodies #2
WS -
Advanced Properties of Freely Falling Bodies #3
WS -
Average Speed and Average Velocity
WS -
Average Speed Drill
WS -
Charged Projectiles in Uniform Electric Fields
WS -
Chase Problems #1
WS -
Chase Problems #2
WS -
Chase Problems: Projectiles
WS -
Combining Kinematics and Dynamics
WS -
Constant Velocity: Converting Position and Velocity Graphs
WS -
Constant Velocity: Position-Time Graphs #1
WS -
Constant Velocity: Position-Time Graphs #2
WS -
Constant Velocity: Position-Time Graphs #3
WS -
Constant Velocity: Velocity-Time Graphs #1
WS -
Constant Velocity: Velocity-Time Graphs #2
WS -
Constant Velocity: Velocity-Time Graphs #3
WS -
Converting s-t and v-t Graphs
WS -
Energy Methods: More Practice with Projectiles
WS -
Energy Methods: Projectiles
WS -
Force vs Displacement Graphs
WS -
Freefall #1
WS -
Freefall #2
WS -
Freefall #3
WS -
Freefall #3 (Honors)
WS -
Horizontally Released Projectiles #1
WS -
Horizontally Released Projectiles #2
WS -
Kinematics Along With Work/Energy
WS -
Kinematics Equations #1
WS -
Kinematics Equations #2
WS -
Kinematics Equations #3: A Stop Light Story
WS -
Lab Discussion: Gravitational Field Strength and the Acceleration Due to Gravity
WS -
Position-Time Graph "Story" Combinations
WS -
Projectiles Released at an Angle
WS -
Rotational Kinetic Energy
WS -
SVA Relationships #1
WS -
SVA Relationships #2
WS -
SVA Relationships #3
WS -
SVA Relationships #4
WS -
SVA Relationships #5
WS -
Work and Energy Practice: An Assortment of Situations
TB -
2A: Introduction to Motion
TB -
2B: Average Speed and Average Velocity
TB -
Antiderivatives and Kinematics Functions
TB -
Honors: Average Speed/Velocity
TB -
Kinematics Derivatives
TB -
Projectile Summary
TB -
Projectile Summary
TB -
Projectiles Mixed (Vertical and Horizontal Release)
TB -
Projectiles Released at an Angle
TB -
Set 3A: Projectiles
Direct Measurement Video Project
Peter Bohacek
Copyright © 2013-2017
All rights reserved.
Used with
permission
.
PhysicsLAB
Lab Implementation
Copyright © 2014-2017
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton