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[单选题]
如图,质量为2kg的物体,在两个力的作用下沿光滑水平面运动,两个力的大小分别为F1=2N,F2=1N,它们之间的夹角θ=60°,则该物体的加速度大小为( )
A
2.5m/s2
B
2m/s2
C
1.5m/s2
D
1.25m/s2
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试题答案:
D
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