An Indian fighter plane flying horizontally with speed 800 km/hr releases a bomb (on Pakistan bunker) at a height of 78.4 m from the ground, when will the bomb strike the ground ? Give your answer in second. `[g=9.8 m//s^(2)]`

A fighter plane flying horizontally at an altitude of 1.5 km with speed 720 km/h passes directly overhead an anti - aircraft gun . At what angle from the vertical should the gun be fired for the shell with muzzle speed 600"ms"^(-1) to hit the plane ? At what minimum altitude should the pilot fly the plane to avoid being hit ? (Take g= 10 " ms "^(-2)) .

A hiker stands on the edge of cliff 490 m above the ground and throws a stone horizontally with an initial speed of 15 " m s "^(-1) Neglecting air resistance , find the time taken by the stone to reach the ground , and the speed with which it hits the ground . (Take g=9.8 " m s"^(2)) .

Find the energy possessed by an object of mass 10kg when it is at a height of 6m above the ground. Given g=9.8ms^(-2) .

A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 m//s at an angle of 30(@) with the horizontal. How far from the throwing point will the ball be at the height of 10 m from the ground ? [ g = 10m//s^(2) , sin 30^(@) = (1)/(2) , cos 30^(@) = (sqrt(3))/(2)]

A Bomber flying upward at an angle of 53^(@) with the vertical releases a bomb at an altitude of 800 m. The bomb strikes the ground 20 s after its release. Find : [Given sin 53^(@)=0.8, g=10 m//s^(2) ] (i) The velocity of the bomber at the time of release of the bomb. (ii) The maximum height attained by the bomb. (iii) The horizontal distance tranvelled by the bomb before it strikes the ground (iv) The velocity (magnitude & direction) of the bomb just when it strikes the ground.

A cricket bowler releases the ball in two different ways (a) giving it only horizontal velocity, and (b) giving it horizontal velocity and a small downward velocity. The speed Vs at the time of release is the same. Both are released at a height H from the ground. Which one will have greater speed when the ball hits the ground ? Neglect air resistance

A ball is thrown upwards from the top of a tower 40 m high with a velocity of 10 m//s. Find the time when it strikes the ground. Take g=10 m//s^2 .

A particle is projected from a tower as shown in figure, then find the distance from the foot of the tower where it will strike the ground. (g=10m//s^(2))