How did Newton come up with
f ∝ Δp/Δt ??
Galileo's equation for uniform acellerated motion
v=at so multiply both sides by mass m
mv=ma(t) and call ma force F
Divided both sides by t
Didn't Torricelli (Galileo's student) do this before Newton?
F=m(v/t) and call v/t acelleration a
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