独木船的加速度方向如何?
我们已经推导出了加速度,是这个方向。
We know that the acceleration is in this direction. We derived that.
在这个方向需要有一个加速度,故重量会增加。
There will be weight increase so there is here an acceleration upwards.
这一也十分重要-,加速度与力方向相同。
That's also important — the acceleration is in the direction of the force.
在y方向几乎,没有加速度。
但请看加速度,却是+2,方向是这样的。
But there is the acceleration which is plus two in this direction.
那y方向上,0时刻的加速度是多少?
你知道加速度意味着,不是改变速度就是改变方向。
And, you know acceleration means either change of speed or change of direction.
讨论了加速度与受力、运动方向之间的关系。
The relationship among acceleration, force and the motion direction is discussed.
加速度的方向与合力的方向相同。
The direction of the acceleration is the direction of the net force.
加速度的方向与合力的方向相同。
The direction of the acceleration is the direction of the net force.
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