Formulas Flashcards Preview

Physical Science > Formulas > Flashcards

Flashcards in Formulas Deck (22)
Loading flashcards...
1

Work

Work=force X distance w=Fd

Units = Newton*meters (Nm) or Joules (J) 1Nm=1J

2

Potential Energy

Potential Energy= mass X gravity X height PE=mgh

derived from gravitational potential energy = weight x height

3

Weight

Mass X gravity mg

m=numeric form of inertia
gravity= 9.8 m/s^2

4

Gravity

approx 9.8 m/s^2

5

Kinetic Energy

Kinetic Energy=1/2(massXvelocity^2) KE=1/2(mv^2)

1/2 is a constant

speed= delta displacement/delta time

6

Speed

speed= delta distance/delta time

7

Momentum

momentum = mass X velocity

M= mv

8

Impulse

Impulse = Force X time

9

Impulse-momentum relationship

Impulse = change in mass X velocity

Ft= delta(mv)

10

Work-energy theorem

Work = change in kinetic energy

11

Power

Power = work/time interval

P=w/t

12

Average Speed

Average speed = delta distance/delta time

13

Acceleration

Acceleration = delta velocity/delta time

14

Acceleration r/t force

Acceleration = net force/mass

a=Fnet/m

15

Pressure

P=force/area

16

Liquid Pressure

Liquid P= weight densityXdepth

17

Density

d=m/v

18

Speed of liquid leaking through a hole

Speed = square root of (1/2XgravityXdepth below the surface)

19

Boyle's Law

P1V1=P2V2

20

Coulomb's Law

Force = k[(q1q2)/d^2]

21

Ohm's Law

Current = voltage/resistance

I = V/R

22

Power

P=IV