1. Mousetrap Car Physics Concepts U3b-L8 If you are trying to build a long distance traveling or fast vehicle you will need to think carefully about the following concepts: Energy, Power Output, Inertia, rotational inertia, friction, torque, and pulling force.

2. Mousetrap Car Physics Concepts U3b-L8 Power Output is how quickly the energy stored in the mousetrap is released. There are really only two approaches to consider when building your vehicle for distance: 1. Build a fast moving car that releases its energy quickly and then coast as far as possible. 2. Build a slow moving car that releases its energy slowly over the entire pulling distance, this type of car will not coast very far. Steps 3 & 4 – Brainstorm/ Research/ Generate Ideas

3. Mousetrap Car Physics Concepts U3b-L8 Inertia is the resistance that an object has to a change in its state of motion, the more inertia an object has the more force that will be required to change its state of motion. A heavy car will required more pulling force than a lighter car for equal acceleration; therefore, lighter cars will be easier to accelerate but ideally will have less coasting distance that a heavy car at the same speed. Steps 3 & 4 – Brainstorm/ Research/ Generate Ideas

4. Mousetrap Car Physics Concepts U3b-L8 Rotational inertia is the resistance that a wheel or rotation object has to changing its state of rotation. Similar to inertia but dealing with a rotating object. The less rotational inertia that an object (wheel) has the less the torque that will be needed to change its state of rotation or the easier it will be to accelerate. Steps 3 & 4 – Brainstorm/ Research/ Generate Ideas

5. U3b-L8 -Finish Brainstorming Detailed Sketches So you may work on your detailed drafted drawing in class. -Complete steps 1-10 of the “Mousetrap car” project. Follow the rubric to ensure a high score. -Study for TEST Friday 13, NOV. HOMEWORK

6. U3b-L8 -By Now You Should Have Completed Some of “Mousetrap car” Project Design Process Steps -Let’s Review Step 7. Design Process Review

7. U3b-L4 7.An explanation of your final design a.Detailed drafted drawings b.Steps to make it c.Explanation of how it satisfies all criteria and constraints Outcome: Sentences, Lists, Charts, Sketches Step 7 – Develop Design Proposal

8. Sample DETAILED DRAFTED DRAWING DO NOT COPY! You Need A Compass To Draw Circles! Complete Check List Below To Begin Your Own Drafted Drawing __ Finished Border __ Finished Brainstorming Detailed Sketches __ Starting Detailed Your Drawing Must Have A Top View Not A Rear View! Drafted Drawing Without TALKING Work On One Of The Listed Items REMEMBER FOCUS NO TALKING OR PTS. LOSS Above!