Chapters 4-8 Flashcards
Force
Something capable of changing an objects state of motion (velocity)
Inertia
The natural tendency of an object to maintain a state of constant velociy
Newtons 1st Law
In the absence of an unbalanced force, a body maintains its velocity
An unbalanced net force shows what?
A change in velocity
Newtons 2nd law
An unbalanced net force, F, on an object of mass, m, will give it an acceleration
What are the units of force
Newtons (N)
Acceleration
A=F/m
Position Formula
x=x0+v0t+1/2at^2
Velocity
v=v0+at
Newtons 2nd Law Component Form
EFx=MAx
EFy=MAy
EFz=MAz
Fx=MAx
FCos(0)=MAx
The force exerted on an object by gravity is called?
Weight
What is the force of Gravity
9.8m/s^2
What is the equation for weight?
W=mg
What are the units of weight?
Newtons(N)
Newtons 3rd Law
For every force, there is an equal and opposite force
Normal Force
FSin(0) - mg
Acceleration in the x direction
FCos(0)=MAx
Normal Force on Incline
N-mgCos(0)
Acceleration Down an Incline/Sliding Block
mgsin(0)=MAx
Normal Force on Sliding Block
N-FSin(0)-mg
Dot Product
(ACos(0))B
Cross Product
ABSin(0)
Work
FdCos(0)
A Book Falls From A Height
F=-mgy^
W=Fd
U=mgh
Gravatational PE
U=mgh
A Spring Is Stretched and Released
F=-kx
W=U2-U1
PE of a Spring
U=1/2kx^2
Kinetic Energy
K=1/2mv^2
Conservation of Energy
K1+U1=K2+U2
Power
W/t (Watts)
mgd/t
Linear Momentum
P=mv
Linear Momentum 2+
M1V1i+M1V1i=M2V2f+M2V2f
Elastic Collision
KE and Momentum are conserved
Inelastic Collision
Only Momentum is conserved
Mass Collides with stationary mass
mv=m1+m2
1/2mv^2
1/2M1+M2Vf^2
