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【多选题】
如图甲所示，用一水平外力F拉着一个静止在倾角为θ的光滑斜面上的物体，逐渐增大F，物体做变加速运动，其加速度a随外力F变化的图象如图示.若重力加速度g取10m/s 2 ，根据图乙中所提供的信息，可以计算出（）
A.
物体的质量
B.
斜面的倾角
C.
物体能静止在斜面上所施加的最小外力
D.
加速度为6m/s 2 时物体的速度
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