A particle is projected with velocity `2 sqrt((gh))` so that it just clears two walls of equal height h which are at a distance of 2h from each other. Prove that the time of flight between two walls is `2 sqrt((h/g))`

The conjugate axis of the hyperbola x^2/a^2+y^2/b^2=1 meets the hyperbola at two points which are at distance 2b from each other.

A particle is dropped under gravity from rest from a height h (g = 9.8m/s^2 ) and it travels and it travels a distance of 9h/25 in the last second the height is

From the top of a cliff 73.5 m a body is projected with a velocity of 19.6 m/s at an angle of 30^@ with the horizontal. Determine the time of flight, the distance from the foot of the tower and velocity with which the body strike the ground. g =9.8 m/ s^2

A particle performs linear S.H.M along a path of 10 cm. The particle starts at a distance of 2 cm from the mean position and moves towards the positive extremity, Find its initial phase.

Two Indenical bodies are allowed to fall from different heights h_1 and h_2 . The ratio of their momentum when they reach the ground is