42. At one instant, a force acts on a 0.25 kg object that has position vector and velocity What is

問題詳情

42. At one instant, a force

acts on a 0.25 kg object that has position vector

and velocity

What is the object's angular momentum about theorigin?
(A) -1.5 kg m2/s
(B) 1.5 kg m2/s
(C) -0.75 kg m^{2/s
(D) -0.375 kg m^{2/s
(E)0 kg m^2/s}}

答案：A
難度：計算中-1
書單：沒有書單，新增