When a ball of mass m is dropped from rest from a heighth, its speed just before landing is v. Now,suppose a second ball of mass 4m is dropped from rest froma height h/4. (A) Just before ball 2 lands, is its speed4v,2v,v, v/2, or v/4? (b) Choose the bestexplanation from among the following:
I. The factor of 4 cancel; therefore , the landing speed isthe samee
II. The two balls land with the same kinetic energy;therefore, the ball mass 4m has the speed v/2.
III. Reducing te height by a factor of 4 reduces the speed bya factor of 4
I'm thinking the higher the ball, the more the velocity remainconstant, but the energy is increased