Test II. Problem Solving. Answer the following items. Use additional sheets of paper when necessary. Provide with the Free Body Diagram and strictly follow the GRESA. 1. An object with a mass of 34 kg falls from the rest from the top of a building. At one instance of its flight, it encounters an air resistance of 312 N. (a) What is its acceleration at this instance? (b) What must be the value of air resistance for the object to attain its terminal velocity? (c) What is its terminal speed if the drag coefficient is 1.2 N-(m/s)?? Assume that air resistance is proportional to the square of velocity.

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Chapter4: Dynamics: Force And Newton's Laws Of Motion
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Test II. Problem Solving. Answer the following items. Use additional sheets of paper when necessary. Provide
with the Free Body Diagram and strictly follow the GRESA.
1. An object with a mass of 34 kg falls from the rest from the top of a building. At one instance of its flight, it
encounters an air resistance of 312 N. (a) What is its acceleration at this instance? (b) What must be the value of
air resistance for the object to attain its terminal velocity? (c) What is its terminal speed if the drag coefficient is
1.2 N-(m/s)*? Assume that air resistance is proportional to the square of velocity.
2. When we write on the board with a piece of chalk, an irritating noise results when the chalk is held at some
angles. Yet, this does not happen at any other angles. Why?
Transcribed Image Text:Test II. Problem Solving. Answer the following items. Use additional sheets of paper when necessary. Provide with the Free Body Diagram and strictly follow the GRESA. 1. An object with a mass of 34 kg falls from the rest from the top of a building. At one instance of its flight, it encounters an air resistance of 312 N. (a) What is its acceleration at this instance? (b) What must be the value of air resistance for the object to attain its terminal velocity? (c) What is its terminal speed if the drag coefficient is 1.2 N-(m/s)*? Assume that air resistance is proportional to the square of velocity. 2. When we write on the board with a piece of chalk, an irritating noise results when the chalk is held at some angles. Yet, this does not happen at any other angles. Why?
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