physics 101 equations

Question 1

kinetic energy

Answer 1

1/2mv^2

Question 2

work

Answer 2

Forcedisplacement = F(cos(theta))delta X = FdeltaX = 1/2 mv^2 (final) - 1/2mv^2(initial) = KEf-KEi

Question 3

power

Answer 3

deltaW/delta(t)

Question 4

spring potential energy

Answer 4

U(spring)=1/2k(deltaL)^2

L=length the spring is compressed

Question 5

gravitational potential energy

Answer 5

Ugrav=mg(delta(H))
m=mass
g=gravity
H=height

Question 6

spring force

Answer 6

-k(deltaX)

Question 7

Normal force at rest

Answer 7

N=w=mg
m=mass
g=gravity

Question 8

Normal force on an incline

Answer 8

N=mgcos(theta)

theta=angle of inclination

Question 9

normal force with an external upward force

Answer 9

N=mg-Fsin(theta)
F=outside force
theta=the angle between the object and the outside force

Question 10

normal force with a external downward force

Answer 10

N=mg+Fsin(theta)
F=outside force
theta=the angle between the object and the outside force

Question 11

normal force as apposed to friction

Answer 11

N=Friction/mu

Question 12

force of friction

Answer 12

f=N*mu