flash formula forces
TRANSCRIPT
Forces
F = ma
F = resultant force [N]
m = mass [kg]
a = acceleration [m/s2]
10 N 10 N
No resultant force
No acceleration
stationary or moving with constant speed
10 N 8 N
resultant force = 2 N
body accelerates
speed increases
W = mg
W = weight [N]
m = mass [kg]
g = gravitational acceleration [m/s2]
weight
air resistance
resultant force acts downwards
accelerates downwards
speed increases
weight
air resistance
weight = air resistance
No resultant force
No acceleration
falling with constant speed
terminal velocity