拉力的方向是这样的。

And you feel a pull in this direction.

youdao

拉力是一种物体在空气中所受到的阻力，它能产生与球运行方向相反的作用力，减缓球的运行速度，而升力则是一种能使物体偏离直线运行轨迹的力。

Drag is the force of air resistance pushing against a ball's motion and slowing it down, while lift is a force causing a ball to swerve off a straight path.

youdao

可如果你有很好的平衡感，你会感觉到一股向着船体的拉力，或者你也许不用感觉就能知道飞船的方向。

But if you have a good balance, you feel a little tugging to the ship, or maybe you just know which way the ship is without feeling it.

youdao

the ropes will be pulling the block with T in the other direction, then I got 10 Newtons here.

绳子也会对另一物体施加方向相反的拉力 T,于是我知道这里是 10 牛顿

耶鲁公开课 - 基础物理课程节选