[填空题]
The gravitational slingshot effect. Figure 7–47 shows/7dzu; hrn*now.5h bp the planet Saturn m-9,e.;6y cjqmd1jlz kfb w /nmoving in the negative x direction at its orbital spe1 e/ nbm6dlwzmcqk.jy9f-;j ,ed (with respect to the Sun) of 9.6km/s The mass of Saturn is $5.69 \times10^{ 26}$kg A spacecraft with mass 825 kg approaches Saturn. When far from Saturn, it moves in the direction at 10.4km/s The gravitational attraction of Saturn (a conservative force) acting on the spacecraft causes it to swing around the planet (orbit shown as dashed line) and head off in the opposite direction. Estimate the final speed of the spacecraft after it is far enough away to be considered free of Saturn’s gravitational pull. km/s
