Downward Speed
Two balls with the same diameter roll down the ramp at the same time from the same height, but following different trajectories. Which will be the first ball to reach the finish point?
Includes: 2 rubber balls
Estimated Delivery Date: International: 2-3 days (by DHL Express)
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Downward Speed
Two balls with the same diameter roll down the ramp at the same time from the same height, but following different trajectories. Which will be the first ball to reach the finish point?
Includes: 2 rubber balls
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