gc textbook chapter 7 Linear Momentum (id: 33fc8fd58)

本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 IB物理学

[填空题]
Two balls, of masses 4ma+gc/m8 8jrsls;v.py 4mf j(jlv5g,fe zxju f 5*-c$m_A$ = 40g and $m_B$ = 60g are suspended as shown in Fig. 7–44. The lighter ball is pulled away to a 60$^{\circ} $ angle with the vertical and released.
(a) What is the velocity of the lighter ball before impact?$\approx$    m/s
(b) What is the velocity of each ball after the elastic collision?v'$_A$ $\approx$    m/s v'$_B$ $\approx$    m/s(Round to two decimal places)
(c) What will be the maximum height of each ball after the elastic collision?    m

参考答案:
空格1: 1.7±2%  空格2: -0.34±2%  空格3: 1.4±2%  空格4: 0.096±2% 


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