gc textbook chapter 7 Linear Momentum (id: f828721d8)

本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 通用国际物理

[填空题]
A tennis ball of mass m=0.j2:7hx fcsf 1z0s2jat,-rhf8 bgz/kn 26kg and speed v=25m/s strikes a wall at a 45 $^{\circ} $ angle and rebounds with the same speed at 45 $^{\circ} $ (Fig. 7–32). What is the impulse (magnitude and direction) given to the ball?   kg*m/s to the  ----待选择----leftright 

参考答案:
空格1: 2.1±2%  空格2: left 


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