Question

plz answer
answer-4,chapter -kinematics ​

Answer 1

time of flight for two complementary angles .

theta and ,(90- theta)

⏩in this case range is same for angles of projection theta and (90-theta )

but has different time if flight .

✨time if flight

T = (2usintheta )/g

T '= [2u sin(90-theta )]/g

then,

T/T'= tan theta

and ,

T T' = 2R/g

then ,

R= T T' g/2

⏩so correct Answer is 4)

follow me

I hope it help you ❤️

Answer 2

solution ;

time of flight for two complementary angles .

⏩

time of flight

T = (2usintheta )/g

T '= [2u sin(90-theta )]/g

then,

T/T'= tan theta

T T' = 2R/g

then ,

R= T T' g/2

correct

Answer is 4)