Physics II workshop_Part_11

Physics II workshop_Part_11 - 6. If you drop a cart, it...

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24 6. If you drop a cart, it falls through the air with an acceleration which is about g = 9.8 m s -2 . How does that compare to the acceleration of my cart as it rolled down a ramp? Give a numerical answer. 7. The definition of acceleration (in a straight line) is a dv dt . So, turning this around, we can find velocity from v = adt . Assume that the acceleration of the cart does not change with time (is this consistent with your data?) Integrate (symbolically) to find the velocity as a function of time (don't forget the constant of integration). Does your result agree with what you see in the graph? 8. The definition of velocity (in a straight line) is v dx dt . So you can also integrate velocity to find position as a function of time. Again, does your equation agree with what you see in the graph? 9. What was the angle of the ramp? (No, I haven't told you how to do this yet . .. so don't worry if you don't know how.) 10. What is the percentage uncertainty in the largest value of position? What is the percentage
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Physics II workshop_Part_11 - 6. If you drop a cart, it...

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