How fast does a ball roll down a ramp?

Answer

How long it takes for a ball to roll down a ramp is based on a number of factors. The time it would take depends on the weight of the ball, and the angle of the ramp. Accurate time can be determined by doing an experiment with a ball, and using a timer.
Reference:
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Gravity, rolling resistance, normal force, and drag. Drag is assuming that there is some sort of fluid (gas or liquid) that it is rolling through. Normal force is the force exerted
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