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Minute To Win It Physics
Transcript of Minute To Win It Physics
4. Rolling Friction
5. Velocity The Physics Explained Inertia
An object in motion stays in motion and an object at rest stays at rest unless acted upon by an unbalanced force. A baseball that is thrown will keep moving, and a baseball laying on the mound will stay still unless acted upon by an unbalanced force. Example It applies in this Minute to Win it Game when the quarter is rolled, it will keep moving until stopped by the fork (the unbalanced force). F=ma An object that has an unbalanced force acting on it will accelerate in the direction of that force. Example If I kick a soccer ball, the soccer ball will accelerate in the direction of which I am kicking (the direction of the force). Force Acceleration It applies to this Minute to Win It game when I roll the quarter, I am applying an unbalanced force to it which will cause it to accelerate in the direction of the force (the direction that I roll it). Action/Reaction For every action there is an equal but opposite reaction Example when two cars collide, the action force would be the collision and the reaction force would be the cars bumping back. Action Reaction Reaction It applies to this Minute to Win It game when the quarter is rolling on the floor, the quarter pushes against the floor, the action force, while the floor pushes back up on the quarter, the reaction force. Rolling Friction Rolling friction is the acting between surfaces where one has a rounded shape. Example Car tires roll on the street, creating rolling friction It applies to this Minute to Win It game when the quarter is rolling across the floor, rolling friction will occur. Velocity Velocity is the speed of an object in a particular direction Example
Riding your bicycle at a constant speed in the same direction. 7mph East Resources Image of fork - http://www.vintageiron.com/images/fork.jpg Image of quarter - http://www.coinfacts.com/quarter_dollars/50_states_quarters/50_states_obv.JPG Image of measuring tape - http://www.searchmarketinggurus.com/.a/6a00d8341bfb1a53ef01157026affc970b-800wi Image of black car - http://gadgets.boingboing.net/gem-peapod-car-by-chrysler-llc-et008_027evsqu.jpg Image of red car - http://www.treehugger.com/ec-rnd-005.jpg Youtube blueprints video - http://www.youtube.com/watch?v=ZcKoyvgcTOw It applies to this Minute to Win It game when the quarter is rolling, it has a velocity because it is moving in the same direction at a constant speed. Playing the Game I thought I would never be able to win this game. I tried once and failed, twice and failed, three...four...five, but finally on the sixth try with 32 seconds left in the game, I succeeded. I rolled the quarter perfectly into the middle prong of the fork. This was a level nine challenge and it only took me 6 tries. I bet you couldn't do that. Why don't you try and see. I CHALLENGE YOU!!!! FINALLY!!!