Question 2-4: Did one object take significantly longer than the other to reach the floor, or did they both hit at about the same time?
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1. Two heavy balls have the same diameter, but one is twice the weight of the other. They are dropped simultaneously from the roof of a house, beginning at the same height. Which of the following is correct? a. The heavier ball will reach the ground much sooner than the lighter ball, but not in half the time. b. The heavier ball will reach the ground in half the time of the lighter ball. c. The lighter ball will reach the ground in half the time of the heavier ball. d. The lighter ball will reach the ground much sooner than the heavier ball, but not in half the time. e. The two balls will reach the ground at about the same time. 2. The balls from the previous problem roll off a table with the same speed. Which of the following is true? a. Both balls hit the floor at about the same horizontal distance from the table. b. The heavier ball hits the floor at about half the horizontal distance of the lighter ball. c. The lighter ball hits the floor at about half the horizontal distance of the heavier ball. d. The lighter ball hits the floor much closer to the table than the heavier ball, but not necessarily half the distance. e. The heavier ball hits the floor much closer to the table than the lighter ball, but not necessarily half the distance.
Animesh R.
- ce Predict/Explain You drop two balls of equal diameter from the same height at the same time. Ball 1 is made of metal and has a greater mass than ball $2,$ which is made of wood. The upward force due to air resistance is the same for both balls. (a) Is the drop time of ball 1 greater than, less than, or equal to the drop time of ball $2 ?$ (b) Choose the best explanation from among the following: I. The acceleration of gravity is the same for all objects, regardless of mass. II. The more massive ball is harder to accelerate. III. Air resistance has less effect on the more massive ball.
Kadal S.
CE Predict/Explain You drop two balls of equal diameter from the same height at the same time. Ball 1 is made of metal and has a greater mass than ball $2,$ which is made of wood. The upward force due to air resistance is the same for both balls. (a) Is the drop time of ball 1 greater than, less than, or equal to the drop time of ball 2$?$ (b) Choose the best explanation from among the following: \begin{equation} \begin{array}{l}{\text { I. The acceleration of gravity is the same for all objects, regard- }} \\ {\text { less of mass. }} \\ {\text { II. The more massive ball is harder to accelerate. }} \\ {\text { III. Air resistance has less effect on the more massive ball. }}\end{array} \end{equation}
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