Physics Equations Flashcards
Density =
Mass / Volume
Distance Travelled =
Speed x Time
Acceleration =
Change in velocity / Time
Kinetic Energy =
0.5 x Mass x Speed2
Force =
Mass x Acceleration
MOMENTUM =
MASS X VELOCITY
Work Done =
Force x Distance (along the line of action of the force)
What is power?
Power (W) simple =
The rate at which energy is transferred.
Work Done / Time
Force exerted by a string =
Extension x Spring constant
Gravity Force =
Mass x GFS
PRESSURE =
FORCE TO NORMAL SURFACE / AREA OF THAT SURFACE
MOMENT OF A FORCE
FORCE X DISTANCE (normal to the direction of the force)
This means if you have a slanted long bit on the force multiplier (the long plant on seesaw) and the force was pointing directly upwards, you would have to calculate the distance so it is at a right angle to the force.
Charge Flow =
Current x Time
Potential Difference =
Current x Resistance
Energy Transferred (J) =
Charge x Potential Difference
Power (W) double =
Potential difference x Current
(Current)2 x Resistance
Energy Transferred =
Power x Time
Wave Speed =
Frequency x Wavelength
Efficiency =
Useful output energy transfer / Input energy transfer
What are accelerations about?
5m/s2
What are forces in large accelerations about?
500N
