Create an object that will accelerate down a ramp

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To create an object that accelerates down a ramp and travels three meters without braking systems, several factors need to be considered beyond just the ramp angle. Key considerations include the object's mass, shape, and material, as these will affect friction and aerodynamic drag. The surface texture of the ramp is also crucial, as it influences the coefficient of friction. While determining the ramp angle is important, it may be beneficial to first analyze the object's design and the forces acting on it. Ultimately, a comprehensive understanding of these factors will aid in achieving the desired motion and stopping distance.
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I have to create an object that will accelerate down a ramp and travel for a distance of three metres and stop. No braking systems allowed. Once i know the angle of the ramp what factors do i need to consider?
 
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Well, list a few factors that you think you need to consider other than ramp angle. Also, are you sure you have to get the ramp angle first, or could it wait till you get other factors?
 
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