[填空题]
In a physics lab, a cube slidehtot 4 b.e * k2n0qn0c9qh4ndes down a frictionless bd(t8 zu f9jn+z-rj;aincline as shown in Fig. 7–35, and elastically strikes another cube at the bottom that is only one-half its mass. If the incline is 30 cm high and the table is 90 cm off the floor, where z+rf8 ; zantju(-djb9 does each cube land? [Hint: Both leave the incline moving horizontally.]$\Delta x_{m}$$\approx$ m $\Delta x_{M}$$\approx$ m
