QOD#101 There is a drag force of 300 N on the plane, and the plane has a thrust force of 2,500 N. What is the net force of the plane? 2,200 N

First Law of Motion rest rest unbalanced book sitting on a shelf An object at _______ will remain at _______ unless acted on by an _______________ force. Ex: _____________________ An object in _______ continues in _______with the same _________ unless acted upon by an _______________ force. unbalanced book sitting on a shelf motion motion velocity unbalanced train moving along a track

First Law of Motion Newton’s First Law is often called “____________________” ________ – the tendency of an object to _________ a change in motion. Ex:_______________________ The Law of Inertia Inertia resist

First Law - Video http://science360.gov/obj/video/70fadaa8-c3d4-4132-ba1f-c98be5caeb14/science-nfl-football-newtons-first-law-motion

Second Law of Motion mass accelerate force The greater the ______ of an object, the greater the amount of ________ needed to ___________ the object. Ex:______________________ Force = _______ x ___________ F = force accelerate Its harder to stop an elephant than a toddler from running mass acceleration MA

Second Law Video http://www.youtube.com/watch?v=iwP4heWDhvw

Third Law of Motion For every action (force) there is an _______ and __________ _________. Ex: ___________________ equal opposite reaction Gun firing (action – bullet leaving, reaction – kickback

Newton’s Laws of Motion in Sports https://www.youtube.com/watch?v=MAm6LOUnJ80

Newton’s Laws of Motion WS

Newton’s 2nd Law Equation Newton’s 2nd Law gives us an exact relationship between force, mass, and acceleration. Units (a) Acceleration m/s2 (m) Mass kg (F) Force N Equations F = ma a = 𝐅 𝐦 1 N = 1 kg ∙ m/s2

Ex1: What is the acceleration of a 3 kg object, if a force of 12 N is used to move it? F = m = a = a = 4 m/s2

Ex2: Brad’s car weighs 1,000 kg and is out of gas Ex2: Brad’s car weighs 1,000 kg and is out of gas. Brad pushes the car at an acceleration of 0.5 m/s2. What force did Brad push? F = m = a = ? 1,000 kg 0.5 m/s2 F = ma F = 1,000 kg ∙ 0.5 m/s2 F = 500 kg ∙ m/s2 F = 500 N

Newton’s 2nd Law Equation Practice

QOD #102 Humpty-Dumpty sat on a wall… and had a great fall. Which of Newton’s laws would explain this? Why?