Calculating the gravitational acceleration
A student drops a ball from a height of 15.6 m and measures the time it takes to hit the ground as 1.81 s. In calculating the gravitational acceleration g (in order to compare to its theoretical value 9.8 m/s^2, which of the following is correct?
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A rock of mass 44 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 252 N. What is the magnitude of the acceleration of the rock?
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Discuss the importance of listening. In your opinion, has our fast paced society impacted our ability to listen? Explain and support your answer.
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A U-shaped tube is partly filled water and partly filled liquid that does not mix water. Both sides of the tube are open to the atmosphere. What is the density of the liquid?
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