4. What type of motion is occurring when the slope of a position e time graph is

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4. What type of motion is occurring when the slope of a position e time graph is constant? 5. What type of motion is occurring when the slope of a position s. time graph is c Part 3: Velocity vs. Time Graph Matching you matched you matched. What does the area under a velocity s. time graph represent? 6. Describe, as specißically as possible, how you moved your whiteboard for each of the graphs that 7. Using the velocity rs, time graphs, sketch the position re time graph for cach of the graphs that 8. What type of motion is occurring when the slope of a velocity m. time graph is zero? 9. What type of motion is occurring when the slope of a velocity su time graph is not zero? Part 4: Measuring acceleration on an incline 10. Consider the run(s) where you gave the cart a push down the incline rather than letting it start from rest. Did the fact that you had a nonzero starting velocity affect the acceleration Explain. 11. Consider the run(s) where you pushed the cart ap the incline rather than starting from the top of the incline. Did the direction of the velocity affect the acceleration? Did the acceleration of the cart as it traveled up the incline match that of the cart traveling down the incline? Explain. If the up and down accelerations did NOT match, explain why they did not 12. Is your graph of average acceleration vs. sin (linear? If so, what is the value of the slope? 13. If you kept increasing the angle of the incline of the ramp to values close to 90, your graph should show a linear trend all the way up to 90°. Because you did not do this, you can extrapolate what the value of the acceleration would be when = 90, using your slope. What is the value of the acceleration of the cart when = 9UP How well does the extrapolated value agree with the accepted value of free-fall acceleration (g = 980 m/s)? What is your percent error? 14. Do you think it is valid to extrapolate the acceleration value to an angle of 90? What are the limitations of such an extrapolation? 42

Explanation / Answer

Answer 4.

When the slope of position time graph is constant, it implies that the particle is moving with a constant speed as the slope of the position time graph igves us the speed.

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