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Mass of the toy car (heavier cars might roll differently)

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Other than slope, things like friction on the ramp, the weight of the car, and air resistance can affect speed. A smooth ramp lowers friction, so the car rolls faster. A heavier car might keep rolling more steadily, and how the car is released at the top can also change how quickly it speeds up.

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Check if the writer knows their stuff, if facts support the ideas, and if other sources agree. Biased info sounds emotional or only shows one side.

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This video was helpful in grasping the idea of discernment.;)

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How to Evaluate Sources for Your Essay | Academic vs Non-Academic

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If the slope is steeper, the car will crash with more force at the bottom because it’s moving faster. More speed means a harder hit.

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I predict the crash force will be stronger on a steeper slope. This is similar to road safety rules: when cars drive faster, the crash impact is much bigger, which is why speed limits are lower in the steep hill.

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I will make my test fair by changing only one variable, the slope height while keeping the car, ramp length, and release method the same. For safety, I will ensure the ramp is stable so it cannot fall. From an ethical perspective, I will avoid damaging any equipment and make sure no one is put at risk

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If my method doesn’t work, I’ll adapt by controlling variables more carefully, for example, ensuring the ramp angle is measured consistently with a protractor. I could also change the ramp surface to reduce friction or switch to video analysis for more accurate timing. This makes my test more valid and reproducible.

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If the ramp is too short, I could make it longer so the car has more time to speed up and I can measure it more accurately.

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If the toy car keeps falling off, we could add small barriers on the sides of the ramp so it goes straight and doesn’t crash.

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Our results suggest a non-linear relationship, time decreases quickly at first, then the change becomes smaller. Could we test acceleration instead of just speed?

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Newton's Laws of Motion Rap | 1st 2nd & 3rd | Physics Rap

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at what slope angle do things start getting risky for riders before the forces become too dangerous?

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If we repeated the experiment more times, do you think the graph would look the same, or change?

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Just as steeper slopes increase speed non-linearly, higher car speeds result in disproportionately longer braking distances and more severe crashes.

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This interactive simulation activity is helpful.

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Explore forces, energy and work as you push household objects up and down a ramp. Lower and raise the ramp to see how the angle of inclination affects the parallel forces acting on the file cabinet. Graphs show forces, energy and work.