kinematics/dynamics Flashcards
1
Q
uniform accelerated motion
A
v= v0 +at
x(t) = x0 +v0t + 1/2at^2
2
Q
uniform rectilinear motion
A
x(t) = x0 +vt
3
Q
free fall
A
y(t) = y0 +v0t - 1/2 9.8 t^2
4
Q
angular velocity
A
ω=2π/T
5
Q
uniform circular motion acceleration
A
a = ω^2r
6
Q
uniform circular motion velocity
A
v= ωr
7
Q
second Newton’s law
A
f=ma
8
Q
units of second Newton’s law
A
1N = kg m/s^2
9
Q
weight
A
weight =mg
10
Q
what is Newton’s first law?
A
if the sum of the forces is equal to zero then acceleration is equal to zero
11
Q
what is the value of g?
A
9.8m/s2
12
Q
normal force N
A
always perpendicular to the surface
13
Q
kinetic energy
A
KE= 1/2mv^2
14
Q
potential energy
A
PE=mgh
15
Q
what is the law of conservation of energy?
A
Etot = 1/2mv^2 +mgh
