A track is made from a piece of channel iron as shown. A ball released at the left end of the track continues past the various points. Rank the speeds of the ball at points A, B, C, and D, from fastest to slowest. (Watch for tie scores.)
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The ball starts from rest and accelerates due to gravity. The points A, B, C, and D are different positions along the track. Show more…
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Hubert A.
A ball is released at the left end of three different tracks. The tracks are bent from equal-length pieces of channel iron. a. From fastest to slowest, rank the speeds of the balls at the right ends of the tracks. b. From longest to shortest, rank the tracks in terms of the times for the balls to reach the ends. c. From greatest to least, rank the tracks in terms of the average speeds of the balls. Or do all the balls have the same average speed on all three tracks?
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