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Grade: 11
        
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.
 
5 years ago

Answers : (2)

Arun Kumar
IIT Delhi
askIITians Faculty
256 Points
							
Hello Student,
initially v=vcos\theta i+vsin\theta j
so to be at height h
we set up this eq
h=vsin\thetat-1/2at^2
whose sum of roots is -b/c=2vsin\theta/g
which is the time of flight
so if when going up height h time is t
then on coming down t’=Time of flight -t
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty
5 years ago
Sumit Majumdar
IIT Delhi
askIITians Faculty
137 Points
							
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Regards
Sumit
5 years ago
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