What is the time of flight of a projectile on a horizontal plane, where u is the initial velocity of projectile, θ is the angle of inclination, and g is the gravitational acceleration?
1
\(\frac{{2{\rm{u}}\sin \theta }}{{\rm{g}}}\)
2
\(\frac{{2{\rm{u}}\cos \theta }}{{\rm{g}}}\)
3
\(\frac{{{\rm{u}}\sin \theta }}{{\rm{g}}}\)
4
\(\frac{{{\rm{u}}\cos \theta }}{{\rm{g}}}\)
5
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