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Unformatted text preview: es above the plane of your lab table. Calculate, using your newly-acquired knowledge of dynamics, how long it will take for the Pasco cart to travel 1.5 meters down the track at this angle of inclination. Open up "Motion Sensor.cmbl" and actually measure the time it it takes. The diagram below may be useful in helping to resolve forces into X and Y components: Fx Fy F
Fx =F sin Fy = F cos Assessment and Presentation (Hand-in Sheet/Lab Notebook) Write the results from the four activities above in the hand-in sheet. Then answer these questions: 1. Does your result for Activity 1 conclusively prove Newton's First Law? Why or why not? What modifications in equipment or conditions would you need to prove it conclusively? 2. Standing on a frictionless surface (like a perfectly smooth ice rink), two boys, one strong and one weak, are attempting to break a string in half by pulling on its opposite ends. If they each exert constant force on the string, who is exerting more force? 3. In order for a car to accelerate forward from rest, an external force must act on it. Which direction does this external force act? What is providing this external force on the car? According to Newton's Third Law, there should be an opposite reaction force where is this reaction force coming from, and what is it acting on?...
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