PHYS 151Q.005 2-6-2008

PHYS 151Q.005 - and change of direction Force is a vector in Newton Assume object is small particle with mass m Net force is the vector sum of all

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Day 7 Wed 2/6/2008 PHYS 151Q.005 Chapter 4. Force and Motion Super Mario and his Evil Gun Mario is doing his famous “A-Jump” with velocity (3m/s, 4m/s) at his old fashion 2D world. At the same time, there is an evil gun shooting a shell 30 m in front of Mario. The gun tower is 3m tall, shell speed is 7 m/s, gravity free: but Mario is under the influence of “gravity” (gn=-2m/s^2). Will the shell hit Mario?
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Galileo = a moving object has an intrinsic “quantity of motion” and Needs no Push to keep it moving” Force is the quantity causes “changes” in motion
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Changes of motion include starting and stopping, speeding up or slowing down (straight line),
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Unformatted text preview: and change of direction. Force is a vector in Newton. Assume object is small particle with mass m. Net force is the vector sum of all forces acting on the object. Newton’s 1 st Law of motion = An object will stay at rest or continue on a constant velocity (straight line motion) unless it is acted upon by a none zero net force (Rest or constant velocity). Mass= the quantity to measure object’s inertia The standard unit of mass is kilogram Inertial reference frame is the coordinate system which has zero net force Newton’s Second Law – the changes of an objects momentum is equal to the net force acting on it...
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This note was uploaded on 05/22/2008 for the course PHYS 151Q taught by Professor Wang during the Spring '08 term at UConn.

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PHYS 151Q.005 - and change of direction Force is a vector in Newton Assume object is small particle with mass m Net force is the vector sum of all

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