Recall Galileo's Leaning Tower experiment. With negligible air resistance, a heavy and a light object fall
A) with equal accelerations.
B) with the same increases in speed.
C) to the ground in equal times.
D) all of the above
Answer: D
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A 1.8-kg block is projected up a rough 10° inclined plane. As the block slides up the incline, its acceleration is 3.8 m/s2 down the incline. What is the magnitude of the force of friction acting on the block?
A. 5.0 N B. 3.8 N C. 4.2 N D. 4.6 N E. 6.5 N
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