Two bodies are thrown with same velocities at angles a and,`(90^@ - a)` with the horizontal. What will be the ratio ofmaximum heights attained by them and ii)of horizontal ranges.

Two bodies are projected at an angle theta and (90 - theta) to the horizontal with the same speed. Find the ration of their time of flight.

Find the angle of projection so that a body when projected has the horizontal range equal to the maximum height attained.

A particle is projected form ground with an initial velocity 20ms^-1 at an angle 30^@ with the horizontal. What is the magnitude of change of velocity in 5sec.

A body is projected with a speed v at an angle theta with horizontal to have maximum range. What is the velocity at the highest’ point?

A stone is thrown in a vertically upward direction with a velocity of 5 m s^1 . If the acceleration of the stone during its motion is 10m s^-2 in the downward direction, what will be the height attained by the stone and how much time will it take to reach there?

Prove that the maximum horizontal range is four times the maximum height attained by a projectile which is fired along the required oblique direction.

A ball of mass m moving with a constant velocity strikes against a ball of same mass at rest.If e is the co-efficient if restitution what will be the ratio of velocity of two balls after collision?

An object thrown at a certain angle to the ground moves in a curved path and fails back to the ground.. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?

A mass of 5.0 kg is pulled along a horizontal plane by a force in a direction making an angle 45° with the horizontal.The body moves with uniform velocity through a distance of 10 metre. Find the work done by the force(Co-efficient of firction=0.3).

A body is projected downward at an angle 60^@ with the horizontal with a velocity 9.8 ms^-1 form building 20m high. How long will it take before striking the ground.