PhysSept23

# PhysSept23 - with a force of 10 N at an angle of 25 o from...

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September 23 Physics

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In: If all of the forces acting on an object balance so that the net force is zero, then a) the object must be at rest. b) the object’s speed will decrease c) the object will follow a parabolic trajectory. d) the object’s direction of motion can change, but not its speed e) none of the above.
Objective: To continue to build an understanding of Newton’s laws. Success criteria: Explore Newton’s 3 rd law

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Finding net force: Net force is the combination of all the forces
Finding the net force: Draw a free body diagram List all the forces Use vectors to combine

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A girl walks her poodle, pulling on the leash

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Unformatted text preview: with a force of 10 N at an angle of 25 o from horizontal. What are the horizontal and vertical components of the force? Newton’s 3 rd Law For every action (force) there is an equal and opposite reaction (force). Practice Newton’s 3 rd : A .005 kg bug hits a windshield of a 2000kg car with a force of 2 Newtons. What is the acceleration of the car? The bug? Exploration: Newton’s third law Does EVERY force always have an equal and opposite force? Out: A 2000 kg van crashes into a building, with an acceleration of 300 m/s 2 . How much force does the wall receive?...
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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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PhysSept23 - with a force of 10 N at an angle of 25 o from...

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