The direction of velocity of a projectile at a certain instant is inclined at angle `60^circ` with the horizontal. After 1 second it is inclined at an angle `30^circ`. If horizontal component of velocity of projection is `(gsqrt3)/k`, then find k.

The direction of motion of a projectile at a certain instant is inclined at an angle 60^(@) to the horizontal. After sqrt(3) seconds it is inclined an angle 30^(@) . If the horizontal compound of velocity of projection is 3n (in m//sec) then value of n is : (take g = 10 m//s^(2))

The direction of a projectile at a certain instant is inclined at an angle prop to the horizontal , after t second, it is inclined at an angle beta . Prove that the horizontal component of the velocity of the projectile is ("gt")/(tan prop - tan beta) .

Two second after projection, a projectile is travelling in a direction inclined at 30^(@) to the horizontal. After one more second, it is travelling horizontally. Find the magnitude and direction of the velocity of projection.

Two seconds after projection, a projectile is travelling in a direction inclined at 30^@ to the horizontal. After one more second, it is travelling horizontally. Find the magnitude and direction of its velocity.

Two seconds after projection, a projectile is travelling in a direction inclined at 30^(@) to the horizon. After one more second it is travelling horizontally. Then

After one second the velocity of a projectile makes an angle of 45^(@) with the horizontal. After another one more second its is travelling horizontally. The magnitude of its initial velocity and angle of projectile are (g=10m//s^(2))

A projectile is projected from the ground by making an angle of 60^@ with the horizontal. After 1 s projectile makes an angle of 30^@ with the horizontal . The maximum height attained by the projectile is (Take g=10 ms^-2)

A particle is thrown at time t = 0 with a velocity of 10 ms^(-1) at an angle 60^@ with the horizontal from a point on an inclined plane, making an angle of 30^@ with the horizontal. The time when the velocity of the projectile becomes parallel to the incline is