6. A body of m, moving at v along a smooth horizontal surface, collide with ahorizontally spring with a spring constant k (see figure). Themaximum compress value Al for the spring1). Al = vk2). Al = v3) Al = vvmk4) Al = v/Vmk7. The first cosmic velocity for a planet is v. T. The another planet radius is n times theradius of the first planet, and the average density is the same. The first cosmic velocityfor another planeta) vz = Vnvb) v, = nkс) и, %3Dvnd)8. A ball of mass m, half immersed in water, floats in it. If the density of water is p0, thedensity of oil is p1, the buoyancy to the ball if it is in oil will bea) F=pomg/2p1b) F=mgc) F=mg/2d)F=pimg/2po||

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