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Understanding Newton's Second Law of Motion

Explore the concept of Newton's Second Law of Motion, its definition, applications, and practical examples. Learn how forces affect the motion of objects and the relationship between force, mass, and acceleration. Test your understanding with interactive questions. Access additional learning resources through provided video links.

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Understanding Newton's Second Law of Motion

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  1. Newton’s Second law of motion Chapter 1 CLIL LESSON of PHYSICS III A LICEO LINGUISTICO A. S. 2014/2015 Prof. ssa Anna Lucia Daniele Prof. ssa Anna Maria De Francisci

  2. “An impressedforce is an actionexertedupon a body, • in order to changeits state, either of rest, • or of movinguniformlyforward in a right line.” • (Newton, Definition IV, The Mathematical Principles of Natural Philosophy) • • Is a vectorquantity; • • itsmagnitudeismeasured in newtons (N) with a dynamometer. examples • hitting a ball with a bat • force of friction between • pulling with your hand your sneakers and the floor on a fishing line • gravitational force • electric force • magnetic force

  3. Question for you: What happens if a force acts upon a moving object? Try to answer • If the force acts in the direction of motion, the velocity of the object increases. • If the force acts contrary to the direction in which the object is moving, its velocity decreases. In both cases we have a variation of velocity, that is an…

  4. Newton’s Second Law of motion: «The acceleration of an object moving in an inertial reference frame is proportional to the net force acting on it and inversely proportional to its mass» Question: What can you say about acceleration by looking at this formule? (Try to answer)

  5. The net force on an object is equal to the product of its mass and acceleration or Newton’s 2nd law enables us to compare the results of the same force exerted on objects of different mass.

  6. 1.An object of 2 kg mass, acted upon by a net force of 20 N, will experience what acceleration? 5.00 m/s2 a 10.0 m/s2 b 7.50 m/s2 c 12.4 m/s2 d 2.If a net force is acting on an object, then: the object is at rest. a the object is moving with constant velocity. b the object is being accelerated. c the object is losing mass. d 3. A 1,500 kg car is moving with an initial velocity of 20 m/s and comes to a stop in 5 seconds. What is the magnitude of the net force acting on the car?

  7. And now… it's up to you! I’d like you to do something like this: Good work!

  8. … you can watch these two videos, too: Video 1:http://study.com/academy/lesson/newtons-second-law-of-motion-the-relationship-between-force-and-acceleration.html Video 2:http://study.com/academy/lesson/newtons-laws-and-weight-mass-gravity.html

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