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##### Identify your sources

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**Identify**your sources**Don’t push**it**Action**Reaction**May the force be**With you**Identify your**forces Inertia Don’t Push It Action Reaction May the force be with you Force it $100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 $500**This is**the rate of change of velocity**What is**acceleration?**An object is doing this when the distance between it and**another object is changing**What is**in motion?**This is**Distance divided by Time.**What is**speed?**A place or object**• used as a comparison • point to tell whether an • object is moving is called • This.**What is**A reference point?**This is the**Definition of force**What is:**A push or a pull?**A coin resting on a piece of cardboard is placed on a**beaker as shown in the diagram. When the cardboard is rapidly removed, the coin drops into the beaker. This is called…**What is**inertia?**A ball rolls through**a hollow semicircular tube lying flat on a horizontal tabletop. This shows the motion the ball will take True or false. Fix it if false.**What is**false?**Newton’s first**Law states this**What is**Objects in motion, stay in motion, And objects at rest, stay at rest Until acted upon By an unbalanced force?**This is the force that**should stop you if the car stops short.**What is**The seat belt? NOT what is your face hitting the windshield? -5000 point**This is the**definition of inertia**What is**The tendency of an object to resist change In motion?**A student pushes against a tree**• with a force of 10 newtons (N). • The tree does not move. • This is the amount of force • exerted by the tree on the student.**What is**10 N?**The force of an object, with a certain mass accelerating at**a certain rate, • can be determined by using the equation below. • force = mass X acceleration • Of the following obejcts, this object would have the greatest force: • a 5-kg object accelerating at 10 m/s2 • a 5-kg object accelerating at 20 m/s2 • a 20-kg object accelerating at 4 m/s2 • a 20-kg object accelerating at 3 m/s2**What is**• a 5-kg object • accelerating • at 20 m/s2?**This law is why the boy**Has to pull harder on The big rock to move it.**What is**Force = mass x acceleration So If the mass gets larger The force to pull it must be larger?**This is what**North and north poles do.**What is**Repel or push apart?**Newton’s second**Law relates mass, force, and acceleration In this mathematical formula.**What is: F= m x a**Or force equals mass times acceleration?**Forces which are equal**And opposite in direction move an object in this direction**What is**Balanced forces Don’t move objects ?**A balloon can be used to**Show Newton’s third Law in this diagram.**What is: for every**Action there Is an equal and Opposite reaction**This is what happens when**A skater pushes another skater**What is: they both**Go backwards with equal And opposite force?**A student on a skateboard throws**Something heavy. He moves in this direction.**What is**equal and opposite to the force of the throw?**The reason the girl**Fell in the Water is described by this law**What is**Newton’s third law: for Every action there is an Equal and opposite reaction?**These are**Two characteristics That affect the force of friction. .**What are the surface**Textures and how hard You press them together?