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A stone is dropped from a cliff; 2.47 s later another stone is thrown downward with an initial speed of 35 m/s. They reach the ground simultaneously. Find the height of the cliff.
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A cheetah can run very quickly over short distances. Assume a cheetah has a constant velocity of 33.0 m/s and is approaching a gazelle that is initially at rest. When the cheetah is 90 m away, the gazelle begins to run w ...
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Need help answering this question The ancient Egyptians used simple machines to build the pyramids. Discuss how you might use one or more of the simple machines to move the massive stone blocks up the growing pyramid, an ...
Question: Suppose that the coefficient of kinetic friction between Zak's feet and the floor, while wearing socks, is 0.250. Knowing this, Zak decides to get a running start and then slide across the floor. If Zak's speed ...
Question: Some passengers on an ocean cruise may suffer from motion sickness as the ship rocks back and forth on the waves. At one position on the ship, passengers experience a vertical motion of amplitude 1.6m with a pe ...
In chemical changes, new substances are formed. Do the atoms involved actually change? If not, what has changed? How would you help your students visualize this?
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