Two identical particles `1` and `2` are projected from surface of earth with same velocities in the directions shows in figure.

Two particles are projected from the surface of the earth with velocities sqrt(5/7gR) and sqrt(2/5gR) where, R is the radius of the earth what should be the ratio of maximum heights attained?

Two particles A and B are projected from the same point with the same velocity of projection but at different angles alpha and beta of projection, such that the maximum height of A is two-third of the horizontal range of B. then which of the following relations are true?

A number of particles are projected from a given point with equal velocities in different directions in the same vertical plane. At any instant they will lie on

Two particles A and B are projected from the same point in different direction in such a manner that their velocity vectors are shown in the diagram :- .

Two particles A and B are projected from the same point in different direction in such a manner that their velocity vectors are shown in the diagram :- .

Two particles A and B are projected from the same point in different direction in such a manner that their velocity vectors are shown in the diagram :- .

Two particles are projected vertically upwards from the surface of the earth with velocities upsilon_(1) = sqrt((2gR)/3) and upsilon_(2) = sqrt((4gR)/(3)) respectively. If the maximum heights attained by the two particles are h_(1) and h_(2) respectively, then calculate the ratio (h_1)/(h_2) .

Two particles are projected vertically upwards from the surface of the earth with velocities upsilon_(1) = sqrt((2gR)/3) and upsilon_(2) = sqrt((4gR)/(3)) respectively. If the maximum heights attained by the two particles are h_(1) and h_(2) respectively, then calculate the ratio (h_1)/(h_2) .

What is escape velocity? Find an expression for the escape velocity of a body when projected from the surface of the earth. Show that the escape velocity form the earth's surface is about 11.2 km/sec.