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Science,English,and math Ⅱ

No.493　19/02/13 12:04
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【A driving way of using wheels】

《The driving way of using two wheels》

When accelerating or braking suddenly,if worst come to worst,there is a feat that it overturns. There is a way of avoiding overturning. Setting a safety wheel of which shape is ball prevents it from overturning,but we can’t deal with the sudden change of the speed with the safety wheel enough.

《The driving way of using four wheels》

If adopting the driving way of using four wheels like a car, the shortcoming of the driving way of using two wheels on its balance is overcome.

If changing its structure into the one which is used for a race,it can move with high speed,but when changing its course,it can’t do as quickly as the driving way of using two wheels.

The driving way of using four wheels is controlled by front wheels,so it can’t circle there on the spot,and its control has to be changed according to its speed,so its control is harder than the driving way of using two wheels.

There is other way on the…