At an angle theta with horizontal a particle is projected from surface of the earth of radius R with considerable velocity V_(0) to attain a maximum height .h. Then

At an angle theta with horizontal a particle is projected from surface

1.	At an angle theta with horizontal a particle is projected from surface of the earth of radius R with considerable velocity V_(0) to attain a maximum height .h. Then
Answer» the speed of the particle at the maximum height `(RV_(0) cos theta)/((R + h))` The speed of the particle at the maximum height is `(R V_(0)TAN theta)/(sqrt(2) (R + H))` For a particle projected from surface of the earth, angular MOMENTUM is conserved about centre of earth For a particle projected from surface of the earth, angular momentum cannot be conserved about centre of earth due to the gravitational force of attract on acting on the body due to the earth. Answer :A::C::D