Which unit is a unit of acceleration?
a. (meters per second) per second
b. kilograms
c. meters
d. seconds
e. (meters per second) per meter
Question 2
In part (a) of this figure, three identical, equally spaced objects are dropped. In part (b), the two green blocks are moved closer together before they are dropped. In part (c), the two green blocks are combined to form one larger block. Contrasting Galileo's and Aristotle's views, what is the most plausible statement about the speed of the large green block compared with that of the small red block?
a. The green block must fall faster because it is more massive.
b. The green block can be seen as two side-by-side smaller blocks falling at the same rate, hence the larger and smaller blocks fall at the same rate.
c. The larger and smaller blocks fall at the same rate only in a vacuum.
d. The larger block speeds up the fall of the lighter block, but only if they are tied together.
e. The lighter block slows the fall of the heavier block, but only if they are tied together.
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