Observations after experimenting i noticed how the

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Observations: After experimenting, I noticed how the speed was much quicker in terms of the speed of the cart from low and high fan speed. Conclusion: I believe the speed of the cart is faster on high because the force of the fan is causing the cart to push faster or slower. If you take a look at the data line graph of both fan speeds, you can see the difference in the lines when looking at data for low speed and then high speed, the high speed line graph is more vertical which indicates faster acceleration as opposed to the low speed which is rather more linear. therefore, my prediction was correct.
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Activity B: Running out of steam? Get the Gizmo ready: Click Reset . Question: Why do objects slow down when there is nothing pushing them? 1. Observe: Use the Gizmo to explore the question above. Try different objects and surfaces. Each time, turn the fan Off while the cart is moving. (You may find it helpful to pause the Gizmo with the Pause ( ) button, turn the fan off, and then click Play to restart.) 2. Form hypothesis: What causes an object to slow down after no longer being pushed?
3. Predict: Set Fan speed to High . Based on your hypothesis, circle all surfaces that will cause a moving cart to slow down after the fan is turned off. (You may circle more than one.) 4. Test: Run the trials using the Gizmo. Which surface(s) caused the cart to slow down?
5. Draw conclusion: What causes objects to slow down when they are no longer pushed?
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6. Think about it: Imagine the track in the Gizmo went on forever. If there were no friction, how long would it take the cart to stop after you turned off the fan? Explain.

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