Newton's Laws Flashcards
First law?
A body at rest will remain at rest and with constant velocity will remain with that velocity following a straight path unless a force acts upon the body.
Second law?
Force is proportional to acceleration and inversely proportional to the mass
Third law?
Every action has an equal and opposite reaction.
No force exists in isolation
What is mass?
It’s an inherent property of bodies that represents a resistance of such body to change its velocity
What is weight?
It’s the force of gravity on a given body and it is equal to the product of mass times acceleration due to gravity
What is inertia?
This is the tendency of a body to resist any change in its velocity.
Universal Law of Gravity
F = -G(M1)(M2)/(d^2)
Where M1 is the mass of the first body, M2 is the mass of the second body and d is the distance between them
What is the gravitational constant equal to?
G = 6.67 x 10 ^{-11} (N*m^2)/(kg^2)
Types of frictions?
What are they proportional to?
Static Friction and Kinetic one.
They’re both proportional to the normal force
Force in terms of momentum?
This will be equal to the change of momentum.
F = pf - pi
Force and acceleration acting on two bodies
When a force is executed, the bodies involved receive the same force (but in opposite directions) However, their accelerations will be different if they have different masses.
What is the terminal velocity?
This is the velocity reached by a body when it no longer changes its velocity, meaning, when the acceleration reaches zero.
I’m relation to the universal law of gravity:
1) The greater the masses…
2) The greater the distance…
1) The greater the gravitational force
2) The weaker the gravitational force
What is the centripetal force equal to?
Mass * centripetal acceleration
(Mass * velocity squared) / (Radius)
(4 * pi squared * Radius * Mass) / (Period squared)
