A piece of marble is projected from earth's surface with velocity of `19.6 sqrt(2) ms^(-1)` at `45^(@)`. 2 s later its velocity makes an angle `alpha` with horizontal, where `alpha` is

A piece of marble is projected from the earth's surface with a velocity of 50 m s^(-1) . 2 s later , it just clears a wall 5 m high. What is the angle of projection ?

A piece of marble is projected from the earth's surface with a velocity of 50 m s^(-1) . 2 s later , it just clears a wall 5 m high. What is the angle of projection ?

A ball is projected with a velocity 20 sqrt(3) ms^(-1) at angle 60^(@) to the horizontal. The time interval after which the velocity vector will make an angle 30^(@) to the horizontal is (Take, g = 10 ms^(-2))

A ball is projected with a velocity 20 sqrt(3) ms^(-1) at angle 60^(@) to the horizontal. The time interval after which the velocity vector will make an angle 30^(@) to the horizontal is (Take, g = 10 ms^(-2))

A projectile is thrown in the upward direction making an angle of 60^@ with the horizontal with a velocity of 140 ms^-1 . Then the time after which its velocity makes an angle 45^@ with the horizontal is (Acceleration due to gravity g=10 ms^-2 )

A particle is projected from a horizontal plane with a velocity of 8sqrt2 ms ^(-1) ms at an angle theta . At highest point its velocity is found to be 8 ms^(-1) Its range will be (g=10 ms^(-2))

A particle is projected with velocity 50 m/s at an angle 60^(@) with the horizontal from the ground. The time after which its velocity will make an angle 45^(@) with the horizontal is

A particle is projected with velocity 50 m/s at an angle 60^(@) with the horizontal from the ground. The time after which its velocity will make an angle 45^(@) with the horizontal is