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题1:如图1所示,一质量为m=2kg的平板车左端放有质量M=3kg的小滑块,滑块与平板车之间的动摩擦因数μ=0.4,开始时手板车和滑块共同以ν_0=2m/s的速度在光滑水平面上向左运动,并与竖直墙壁发生碰撞。设碰撞时间极短且碰撞后平板车速度大小保持不变,但方向与原来相反。试求平板车与墙第一次相碰后所通过的总路程。(平板车足够长,以至滑块不会滑到平板车右端,g取10m/s~2)
Question 1: As shown in Figure 1, a small mass slider with a mass of M=3kg is placed on the left end of a flatbed with a mass of m=2kg, and the dynamic friction coefficient between the slider and the flatbed is μ=0.4. At the beginning, the trolley and the slider are common. Moves to the left with a speed of ν_0=2m/s on a smooth level and collides with a vertical wall. It is assumed that the collision time is very short and the speed of the flatbed after the collision remains the same, but the direction is opposite to the original. Try to find the total distance traveled after the flatbed and the wall meet for the first time. (The flatbed is long enough that the slider does not slide to the right end of the flatbed, g takes 10m/s~2)