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Physics gcse formulas

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zariboka's version from 2017-05-23 10:54

Section 1

Question Answer
Average speed=Distance/time
Force=Mass x acceleration
Acceleration=Change in velocity/time taken
Momentum(kg/m2)=Mass x velocity
Efficiency=Useful energy output from the system/total energy input to the system x 100%
memorize

Section 2

Question Answer
Density=Mass/volume
Work done=Force x distance moved in direction of force
Energy transferred=Work done
Kinetic energy=1/2 x mass x speed2
Change in gravitational potential energy=Mass x gavitational field stregnth (10) x change in height
memorize

Section 3

Question Answer
Weight=Mass x gravitational field stregnth
Pressure=Force/area
Moment=Force x perpendicular distance from pivot
Charge=Current x time
Voltage=Current x resistance
memorize

Section 4

Question Answer
Electrical power=Voltage x current
Wave speed=Frequency x wave length
Input power=Output power
Input voltage/output voltage=Primary turns/secondary turns
N=Sin i/sin r
Sin c=1/n
Pressure difference=Height x density x g
memorize