newton’s laws of motion and 2... · to change an object's motion. momentum is always...
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Newton’s Laws of Motion
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Newton’s First Law
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Newton’s First Law
OOPS
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Newton’s First Law
![Page 5: Newton’s Laws of Motion and 2... · to change an object's motion. Momentum is always conserved. This means the total momentum before a collision will be the same after a collision](https://reader034.vdocuments.us/reader034/viewer/2022042022/5e7a728212901e0bea058030/html5/thumbnails/5.jpg)
Newton’s First Law
At Rest: Velocity = Zero.Won’t change without force.
In Motion: Velocity =
Speed + Direction.
Won’t change without force.
![Page 6: Newton’s Laws of Motion and 2... · to change an object's motion. Momentum is always conserved. This means the total momentum before a collision will be the same after a collision](https://reader034.vdocuments.us/reader034/viewer/2022042022/5e7a728212901e0bea058030/html5/thumbnails/6.jpg)
38600 kg per car22000 kg
820 kg (without person)
Newton’s First Law
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Newton’s Second Law
What happens to this fraction as F (force) increases?
What happens to the acceleration if this guy doubles the amount of force?
![Page 8: Newton’s Laws of Motion and 2... · to change an object's motion. Momentum is always conserved. This means the total momentum before a collision will be the same after a collision](https://reader034.vdocuments.us/reader034/viewer/2022042022/5e7a728212901e0bea058030/html5/thumbnails/8.jpg)
Newton’s Second Law
What happens to this fraction as m (mass) increases?
What happens to the acceleration if the amount of mass doubles? (Same force.)
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Newton’s Second Law
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Newton’s Third Law
What is themisconceptionhere?
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Newton’s Third Law
36,000 N36,000 N
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Newton’s Third Law
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Momentum
objectmass(kg)
speed(m/s)
momentum(kg m/s)
Angry rhino 1000 1
Angry bull 800 2
Which one is harder to stop?
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Momentum
objectmass(kg)
speed(m/s)
momentum(kg m/s)
.45 bullet 0.015 275
Thrown Spear
1 22
Which one is harder to stop?
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Momentum
objectmass(kg)
speed(m/s)
momentum(kg m/s)
.45 bullet 0.015 275 4.125
Thrown Spear
1 22 22
Which one is harder to stop?