To live a green life, we should try to save ______ energy and produce_______ pollution. A. more; less B. less; more C. more; fewer D. most; least 答案:A水平面上质量为m的滑块A以速度v碰撞质量为2m/3的静止滑块B,碰撞后AB的速度方向相同,它们的总动量为____________;如果滑块B获得的初速为v0,碰撞后滑块A的速度为____________。