Newton’s Laws Online Activity Debrief

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Presentation transcript:

Newton’s Laws Online Activity Debrief Tahoma Jr. High 8th Grade Science Maple Valley, WA

1. Friction occurs with the movement of two objects in _____________ with each other. 2. Friction is a force that is in the ______________ direction of travel. 3. Static friction occurs when two objects are in contact and ___________ moving. Kinetic friction occurs when two objects are in contact and ____________ against each other. contact opposite not moving

heat 5. Friction always causes ______________ and ________________ of surfaces. 6. When an object is falling through the air and the drag (resistance) equals the pull of gravity, ____________ ____________ has been reached. wearing terminal velocity

7. What is Newton’s first law? An object at rest or in uniform motion will stay at rest or in uniform motion until a net force is applied. In simple terms: The motion of an object will not change unless a force is applied

Newton’s First Law of Motion video (6 mins) WATCH VIDEOS AT HOME WHEN YOU GO THROUGH POWERPOINT AGAIN TO STUDY FOR TEST Newton's Law of Inertia video (2 mins)

8. What is meant by a “net force”? The overall force on an object when all the individual forces acting on an object are added together. If 15 Newtons of force are applied to the right and 20 Newtons of force are applied to the left, the net force will be 5 Newtons to the left 15N 20N net of 5N to the left

9. What is meant by a balanced force? When forces in opposite directions are equal 10N 10N (think of a balanced see-saw… which is a bunch of unbalanced forces balancing each other!) E R R E

10. The more force you apply to an object, the greater it will _____________________. 11. An unbalanced force will cause _______________, _______________, or______________________________. The more an object’s mass, the greater the ___________________ will have to be to make it _________________ (speed up). accelerate (speed up) acceleration deceleration change in direction (vector) force applied accelerate

Newton's Second Law video (3 mins) WATCH VIDEOS AT HOME WHEN YOU GO THROUGH POWERPOINT AGAIN TO STUDY FOR TEST

Newton’s Third Law states: For every action there is an ______________ and ____________ reaction. equal opposite

Newton’s Third Law video (3 mins) WATCH VIDEOS AT HOME WHEN YOU GO THROUGH POWERPOINT AGAIN TO STUDY FOR TEST All of Newton’s Three Laws of Motion Video (6 mins) end show