I am Lily. I like Music and PE very much. But I don't like Maths. Lucy is my friend. She likes Maths and Music very much. But she doesn't like PE. We love to dance and sing after class. We are good friends.

下列有关说法中正确的是（   ）

一个物体A受到水平推力F的作用在粗糙的水平面上做匀速直线运动，则物体A在水平方向上受____ （选填“平衡力”/“非平衡力”）的作用，当撤去F后，物体A还能继续运动，是因为____ ；物体运动变慢直至停止，是因为____ ，在此过程中，物体的动能转化为____ 能。