Section 1
Question  Answer 
acceleration  change in velocity/time taken 
force  mass x acceleration 
weight  mass x gravity 
momentum  mass x velocity 
moment  force x perpendicular distance from the pivot 
resultant force  change in momentum/time taken 
 memorize 
Section 2
Question  Answer 
power  current x voltage 
voltage  current x resistance 
charge  current x time 
energy transferred  current x voltage x time 
wave speed  frequency x wavelength 
refractive index (n)  sin i / sin r 
 
frequency  1/time period 
 memorize 
Section 3
Question  Answer 
efficiency  useful energy output / total energy 
work done  force x distance moved 
GPE  mass x gravity x height 
KE  1/2 x mass x velocity^2 
energy transferred  work done 
power  work done/time taken 
 memorize 
Section 4
Question  Answer 
density  mass/volume 
pressure  force/area 
pressure difference  height x density x gravity 
p1 x v1  p2 x v2 
p1/t1  p2/t2 
v1/v2  n1/n2 
v1 x i1  v2 x i2 
 memorize 
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