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show that there are two values of time for which the projectile is at the same height. also , shiow mathematicallythat the sum of these two times is equal to the time of flight.
Hello Student,initially v=vcos\theta i+vsin\theta jso to be at height hwe set up this eqh=vsin\thetat-1/2at^2whose sum of roots is -b/c=2vsin\theta/gwhich is the time of flightso if when going up height h time is tthen on coming down t’=Time of flight -tThanks & RegardsArun KumarBtech, IIT DelhiAskiitians Faculty
RegardsSumit
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