PhysSept26

PhysSept26 - Practice: Newtons 1 st law : Newtons 2 rd Law...

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September 26 Physics
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In: A person standing on a horizontal floor feels two forces: the downward pull of gravity and the upward supporting force from the floor. These two forces: a) have equal magnitudes and form an action/reaction pair. b) have equal magnitudes but do not form an action/reaction pair. c) have unequal magnitudes and form an action/reaction pair. d) have unequal magnitudes and do not form an action/reaction pair. e) none of the above
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Objective: To practice Newton’s law problems Success criteria: To be able to use Newton’s Laws to solve problems
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Homework collect
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A 100 kg boat floats on the water. Draw a free body diagram of the boat. What is the force of gravity on the boat? What is the buoyant force holding the boat up?
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Unformatted text preview: Practice: Newtons 1 st law : Newtons 2 rd Law A 500 kg boat goes through the water. The engine gives a force of 10000 N and the water has a resistance of 5000 N. What is the net force on the boat? What is the acceleration of the boat? Practice: Newtons 2 nd law: Newtons third law practice Two boats crash together with a force of 10,000N. One boat has a mass of 2000 kg, the other has a mass of 100 kg. What is the acceleration of each? Newtons Law problems Out: Two soccer players collide. The one on the right with a mass of 150 kg gets an accelerationof 6 m/s 2 . The player on the left has a mass of 100 kg. What was his acceleration?...
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This note was uploaded on 11/18/2011 for the course PHYS 121 taught by Professor Burgeson during the Fall '11 term at BYU.

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PhysSept26 - Practice: Newtons 1 st law : Newtons 2 rd Law...

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