gc physics textbook chapter 6 problems (id: de6af29a2)

本题目来源于试卷: gc physics textbook chapter 6 problems，类别为 IB物理学

[填空题]
In the high jump, Fran’s kinetic energy is transformed a 0i,gzw4t(ho intwv1ipai,nlq nb8m;6, ;+d *is tupju* o gravitational potential energy without;ib nut +,6i jp*nqp u,m;v1w8d*lsa i the aid of a pole. With what minimum speed must Fran leave the ground in order to lift her center of mass 2.10 m and cross the bar with a speed of 0.7m/s.    m/s

参考答案: 6.45±2%


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