Lab
Video Lab: Blowdart Colliding with Cart
Printer Friendly Version
This lab is based on a
Direct Measurement Video
called
Blowdart Colliding with Cart
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.
Using data from the video we will calculate the momentum of a blowdart and cart both before and after a collision. Then we will discuss conservation of momentum and any changes in KE that occurred during the collision. Before taking any measurements, view the video several times to acquaint yourself with its scenario.
Refer to the following information for the next four questions.
This initial section of questions deals with the dart's average speed prior to colliding with the cart.
On which frame does the tip of the dart just start to emerge from the pneumatic gun?
On what frame does the tip of the dart reach the 45-cm mark on the video's scale
How much time in seconds does the dart take to reach the cart?
What was the dart's average speed before impacting the Styrofoam on the cart?
Refer to the following information for the next two questions.
According to the background information given with the video, the mass of the dart is 28.3 ± 0.1 grams and the mass of the cart is 250.3 ± 0.1 grams. Now we will investigate the magnitudes of the dart's momentum and KE before its collision with the cart.
Calculate the total momentum in the dart/cart system before the collision.
Calculate the total KE of the dart before the collision.
Refer to the following information for the next three questions.
Our next section deals with calculating the average speed of the dart/cart system as well as the final momentum and KE of the system after the collision.
Between frame +0 and frame +19, the center of mass of the embedded dart and cart system moves forward 5 cm.
What was the average speed of dart/cart system after the collision?
What was the total momentum of the dart/cart system after the collision?
What was the total KE of the dart/cart system after the collision?
Refer to the following information for the next six questions.
Conclusions
Do your answers for the total momentum before the collision and the total momentum after the collision verify that momentum was conserved during the collision?
yes
no
Support your choice in the previous question.
What is the percent difference between the total momentum before the collision and the total momentum after the collision?
What percent of the dart's original KE was lost during this collision?
Is this collision elastic or inelastic?
What impulse does the cart give to the dart in this collision?
Related Documents
Lab:
Labs -
A Battering Ram
Labs -
A Photoelectric Effect Analogy
Labs -
Air Track Collisions
Labs -
Ballistic Pendulum
Labs -
Ballistic Pendulum: Muzzle Velocity
Labs -
Bouncing Steel Spheres
Labs -
Collision Pendulum: Muzzle Velocity
Labs -
Conservation of Energy and Vertical Circles
Labs -
Conservation of Momentum
Labs -
Conservation of Momentum in Two-Dimensions
Labs -
Impulse
Labs -
Inelastic Collision - Velocity of a Softball
Labs -
Loop-the-Loop
Labs -
Ramps: Sliding vs Rolling
Labs -
Roller Coaster, Projectile Motion, and Energy
Labs -
Rotational Inertia
Labs -
Rube Goldberg Challenge
Labs -
Spring Carts
Labs -
Target Lab: Ball Bearing Rolling Down an Inclined Plane
Labs -
Video LAB: Ball Re-Bounding From a Wall
Labs -
Video Lab: Cart Push #2 and #3
Labs -
Video LAB: Circular Motion
Labs -
Video Lab: M&M Collides with Pop Can
Labs -
Video Lab: Marble Collides with Ballistic Pendulum
Resource Lesson:
RL -
A Further Look at Impulse
RL -
APC: Work Notation
RL -
Conservation of Energy and Springs
RL -
Energy Conservation in Simple Pendulums
RL -
Famous Discoveries: The Franck-Hertz Experiment
RL -
Gravitational Energy Wells
RL -
Linear Momentum
RL -
Mechanical Energy
RL -
Momentum and Energy
RL -
Potential Energy Functions
RL -
Principal of Least Action
RL -
Rotational Dynamics: Pivoting Rods
RL -
Rotational Kinetic Energy
RL -
Springs and Blocks
RL -
Symmetries in Physics
RL -
Tension Cases: Four Special Situations
RL -
Work
RL -
Work and Energy
Worksheet:
APP -
Puppy Love
APP -
The Jogger
APP -
The Pepsi Challenge
APP -
The Pet Rock
APP -
The Pool Game
APP -
The Raft
CP -
Conservation of Energy
CP -
Conservation of Momentum
CP -
Momentum
CP -
Momentum and Energy
CP -
Momentum and Kinetic Energy
CP -
Momentum Practice Problems
CP -
Momentum Systems and Conservation
CP -
Power Production
CP -
Satellites: Circular and Elliptical
CP -
Work and Energy
NT -
Cliffs
NT -
Elliptical Orbits
NT -
Escape Velocity
NT -
Gravitation #2
NT -
Ice Boat
NT -
Momentum
NT -
Ramps
NT -
Satellite Positions
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 -
Charged Projectiles in Uniform Electric Fields
WS -
Energy Methods: More Practice with Projectiles
WS -
Energy Methods: Projectiles
WS -
Energy/Work Vocabulary
WS -
Force vs Displacement Graphs
WS -
Introduction to Springs
WS -
Kinematics Along With Work/Energy
WS -
Potential Energy Functions
WS -
Practice: Momentum and Energy #1
WS -
Practice: Momentum and Energy #2
WS -
Practice: Vertical Circular Motion
WS -
Rotational Kinetic Energy
WS -
Static Springs: The Basics
WS -
Work and Energy Practice: An Assortment of Situations
WS -
Work and Energy Practice: Forces at Angles
TB -
Work, Power, Kinetic Energy
Direct Measurement Video Project
Peter Bohacek
Copyright © 2013-2023
All rights reserved.
Used with
permission
.
PhysicsLAB
Lab Implementation
Copyright © 2014-2023
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton