The Momentum Challenge software consists of 10 random multiple choice questions and three problems on the physics topic of momentum. The three problems require the students to take data to calculate one of the velocities, and then use the conservation of momentum equations to find the other velocity. There is one elastic, one inelastic, and one recoil problem. When the students are finished, their scores are saved to a file.
A password is required for the student to start the test. This password can be changed in the instructor inputs screen, which requires another password. Both of these passwords and the path or directory where the student scores are saved can be changed by the instructor.
All of the files are included in a Zip file. Unzip all of the files into a directory.
The following files are included:
InstructorsNotes.doc (this file)
The cncs232.dll must be in the same directory with the two executable files.
System Requirements: PC Computer with Windows XP or later
The Multiple Choice Questions
There are 10 multiple choice questions which are randomly selected, each worth 2 points. Two of the questions require students to make an simple calculation and enter the answer.
Problem 1 is an inelastic momentum problem. The tank shoots a shell to the right into an “object.” The shell is embedded and the object moves to the right. The mass of the shell and object are given. Students must measure the change in distance and the change in time to find the final velocity of the object. From this, they can find the initial velocity of the shell.
Problem two is a recoil momentum problem. The tank shoots a shell and then recoils in the opposite direction. The mass of the shell and the tank are given. Students must measure the change in distance and change in time to find the final velocity of the tank. From this they can find the initial velocity of the shell.
In these two problems, there is a stop watch to measure the time.
Problem three is an elastic momentum problem. Two pucks collide, one coming from the right and the other from the left. The initial masses and velocities of the two pucks are given. Students must measure the change in distance and change in time of one of the pucks. They can then find the final velocity of the other puck.
In this problem, there is a watch that runs constantly starting at the time the shell is leaves the tank.
In all of the problems, the numbers are randomly generated. Students type in their answer and are told if the answer is correct or incorrect. Each problem is worth 10 points. If they get the problem incorrect, they can try again, losing 2 points after each try.
A perfect score for the Momentum Challenge would be 50 points.
The Practice Problems
The MomentumChallengePractice.exe software consists of the three problems without the multiple choice questions if you decide you want to either illustrate or practice the problems with your students.
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Purchaser may install software on one computer at school, one computer at home, and 10 or less in their classroom for use by purchaser and their students only. By buying a second license, purchaser may install software on one computer at home, one computer at school, and all computers in their classroom for use by purchaser and their students only. For computer lab installation or school site licenses, please contact Multimedia Science at email@example.com
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