Second Law of Motion - Ms. Westendorf's Physical Science
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Forces.notebook 1 January 27, 2015 Jan 277:47 AM Which ball will hit the ground first? Medicine ball OR basketball? Jan 277:33 AM What has more force?! http://ed.ted.com/featured/Xd0eu692 Jan 277:49 AM Newton's Second Law Force = mass x acceleration Unit for Force = Newton 1 N = 1 kg x m/s/s Jan 279:47 AM Newton's Second Law 3 Main Ideas: 1. Acceleration is the result of unbalanced forces. 2. A larger force makes a proportionally larger acceleration. 2x force = 2x acceleration 3. Acceleration is inversely proportional to mass. a m a m Jan 278:03 AM Jan 278:03 AM Friction Static Friction force that prevents two surfaces from moving past each other Sliding Friction force that opposes motion between two solid objects Rolling Friction opposing force between rolling object and surface
Transcript of Second Law of Motion - Ms. Westendorf's Physical Science
Forces.notebook
1
January 27, 2015
Jan 277:47 AM
Which ball will hit the ground first?
Medicine ball OR basketball?
Jan 277:33 AM
What has more force?!
http://ed.ted.com/featured/Xd0eu692
Jan 277:49 AM
Newton's Second Law
Force = mass x acceleration
Unit for Force = Newton
1 N = 1 kg x m/s/s
Jan 279:47 AM
Newton's Second Law3 Main Ideas:1. Acceleration is the result of unbalanced forces.
2. A larger force makes a proportionally larger acceleration.
2x force = 2x acceleration
3. Acceleration is inversely proportional to mass.
a m
a m
Jan 278:03 AM Jan 278:03 AM
FrictionStatic Friction force that prevents two surfaces from moving past each other
Sliding Friction force that opposes motion between two solid objects
Rolling Friction opposing force between rolling object and surface
Forces.notebook
2
January 27, 2015
Jan 278:23 AM
Which will fall faster?!
open plastic bag OR crumpled plastic bag
WHY????
Jan 278:09 AM
Air Resistance opposes motion of an object moving through air
Terminal Velocity: gravity and air resistance equal
object stops accelerating=
Jan 278:26 AM
