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Force and Motion
| Question | Answer |
|---|---|
| Force | Any push or pull |
| Motion | any change in position |
| speed | distance on object travels in a given amount of time |
| time | duration of an event |
| velocity | speed and direction |
| acceleration | increase in object speed or velocity |
| decceleration | decrease in object speed or velocity |
| mass | amount of matter in an object |
| weight | amount of gravitational force exerted on an object |
| friction | force that opposes motion occures opposite direction of the motion and determined by the force pushing the two surfeces together /trys to prevent motion |
| air ressistance | friction between any object and the atmosphere |
| aerodynamic | object that creates very little friction between itself and earths amosphere |
| distance equals | speed times time |
| speed equals | distance divided by time |
| time equals | distance divided by speed |
| long stride equals | deacrease in time |
| short stride | increase in time |
| if time increases | speed decreases |
| if time decrease | speed increases |
| RACERS have the least experience in what | heel toe |
| why do you start behind the starting line and walk through the finish line | to not record deceleration/ acceleration |
| Running needs how much balance | kind of a lot |
| walking needs how much balance | some balance |
| heel toeing needs how much balance | LOTS of balance |
| heel toe needs how much concentration | LOTS of concentration |
| walking needs how much concentration | almost none concentration |
| running needs how much concentration | more concentraition |
| heel toe needs how much concentration | LOTS OF concentration straed |
| which triathlon events required the longest stride | the 10m run |
| what affect does the length of the racers leg have on their time | Longer legs, and longer feet= shorter time and greater speed Shorter legs, and smaller feet = longer time, slower speed. |
| Identify the relationship between the time it takes a racer to travel 10m and the overall speed of the racer | If the time it takes a racer to travel 10m increases, then the overall speed deacreases If the time it takes the racer to travel 10m deacreases, then the overall speed of the racer increases |
| How did the need for balance influance the times for each racer. | increased concenration on balance for the heel toe caused an increase in the racers time. |
| what would happen to the racers time or speed if the distance were increasesd. | An increase in distance will result in an increase in time but not nessarily affect speed for distance to impact it would need to increases dramticly to account for fatigue |
| why were the times of each attempt different | the racer may have been accelerationg before the starter gave the signal to go the timer could have been to early of too late with starting or stopping the clock |
| why do you think the 10 meter run had the shortest average time | the run employed the most natural movemnt and the racers had lots of experiance the run required much less concentration on balance then either of the two other events |
| why didnt the racers begin each race exactly on the starting line | to not recored the racers decceleration or acceleration at the finish |
| why do you think the 10 meter heel toe had the longest average time | the heel toe required the greatest concentration which slowed the racer down |
| why do you think we allowed for three attempts in each race | more trials would generate more accurate data |