Friday, 25 September 2015
+TECHNOLOGY UNIT PLANNER
Project Title: Move It! Group Members:BROOK,JADE AND KATE.
Group Roles: Designer: BROOK Prototype Builder : JADE Google Docs Guru:KATE
DESCRIPTION OF CONTEXT: Investigating ways of transferring energy to cause movement in vehicles
To build a device to shoot a table tennis ball over a barrier, the height being increased after each round. You are only allowed to hold the ball before ‘firing’, you must not hold the frame of the device and neither may it be taped to the floor. Only one person from a team is permitted to hold and fire the mangle. You will be allowed one attempt at each barrier height, so your device must be reliable and also sufficiently robust to last several rounds.
Assessment – SOLO Rubric (see below)
Prior Knowledge needed:
How are forces used in the real world to create this type of movement? (provide examples and/or drawings from what you already know)
* WE ARE USING FRICTION BY PUTTING THE BALLOON AND TOILET ROLL TOGETHER AND THEY ARE RUBBING TO CREATE FRICTION. * * *WHEN YOU PULL THE BALLOON BACK AND LET IT GO THRUST IS CREATED WHICH PUSHES THE PING PONG BALL FORWARDS.
ping bong ball
KEY FOCUS: Follow the Technological Process
Timetable for completion of tasks:
√ if deadline met
Friday 4 September
Choose your group and your challenge. Add group names to google doc.
Tuesday 8 September
On google doc add brief and details in Prior Knowledge section. Resources are organised, add list to google doc.
Wednesday 9 September
Plan is drawn, labelled and photo of it added to this doc.
Tuesday 15 September
First prototype made and trialed. Notes made on this doc.
Wednesday 16 September
Improvements made and tested. Notes made on this doc. Photo of design added to this doc. SOLO Rubric completed.
Photo of the drawing of your design, include labels describing parts of your model and materials used. Date Completed____16/9_______
Add a photo of your design: Date completed______16/9________
First Trial Notes
It went will but it was not great i thing we need to add somethings
it went 1.5m
Second Trial Notes
it fell apart when we played with it
we need to make a new one
Final Trial Notes
It did not work and we need a new design
How successful was our design?
not really good but OK
How well did the members of our team work?
You have $300 to award to the members of your team according to:
Allocate the $300 amongst your team according to this criteria.
Tuesday, 28 July 2015
n the physical sciences, mechanical energy is the sum of potential energy and
kinetic energy. It is theenergy associated with the motion and position of an object.
In the physical sciences, mechanical energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object. The principle of conservation of mechanical energy states that in an isolated system that is only subject to conservative forces the mechanical energy is constant. If an object is moved in the opposite direction of a conservative net force, the potential energy will increase and if the speed (not the velocity) of the object is changed, the kinetic energy of the object is changed as well.
In all real systems, however, non-conservative forces, like frictional forces, will be present, but often they are of negligible values and the mechanical energy's being constant can therefore be a useful approximation. In elastic collisions, the mechanical energy is conserved but in inelastic collisions, some mechanical energy is converted into heat. The equivalence between lost mechanical energy (dissipation) and an increase in temperature was discovered by James Prescott Joule.