Two metal balls are the same size but one weights twice as much as the other. Th

Question

Two metal balls are the same size but one weights twice as much as the other. The balls are dropped from the rod of a single story building at the same instant of time. The time it takes the balls to reach the ground below will be: (A) about half as king for the heavier ball as for the lighter one. (B) about half as king for the lighter ball as for the heavier one. (C) about the same for both balls. (D) considerably less for the heavier ball, but not necessarily half as long (E) considerably less for the lighter ball, but not necessarily half as long. The two metal balls for the previous problem roll off a horizontal table with the same speed, in situation: (A) both balls hit the floor at approximately the same horizontal distance from the base the table. (B) the heavier ball hits the floor at about half the horizontal distance from the base of the table than does the lighter ball. (C) the lighter ball hits the floor at about half the horizontal distance from the base of the table than does the heavier ball. (D) the heavier ball hits the floor considerably closer to the ball, but not closer to the base of the table than the lighter ball, but not necessarily at half the horizontal distance. (E) the lighter ball hits the floor considerably closer to the base of the table than the heavier ball, but not necessarily at half the horizontal distance. A stone dropped from the roof of a single story building to the surface of the earth: (A) reaches a maximum speed quite soon after release and then falls at a constant speed transfer. (B) speeds up as it falls because the gravitational attraction gets considerably stronger as the stone gets closer to the earth. (C) speeds up because an almost constant force of gravity acting upon it. (D) falls because of the natural tendency all objects to rest on the surface of the earth. (E) falls because of the combined effects of the force of gravity pushing it downward and force of air pushing it downward.

Explanation / Answer

3) C ....about same

4)A......both balls hit the floor at appoximately same distance

5)

Answer is option C

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