A projectile at any instant during its flight has velocity 5m`s^(-1)` at `30^(@)` above the horizontal.How long after this instant,will it be moving at right angle to the given direction.

A projectile is thorwn with a velocity of 50ms^(-1) at an angle of 53^(@) with the horizontal Detemrine the instants at which the projectile is at the same height

A particle is projected with a velocity of 30 m//s at an angle 60^(@) above the horizontal on a slope of inclination 30^(@) . Find its range, time of flight and angle of hit.

A student and his friend while experimenting for projectile motion with a stopwatch take some approximate readings. As one throws a stone in air at some angle, other observes that, after 2.0s, it is moving at an angle 30^(@) to the horizontal, and 1.0 s after that instant, it is traveling horizontally. Determine the magnitude and the direction of initial velocity of stone.

A projectile is thrown with initial velocity u_(0) and angle 30^(@) with the horizontal. If it remains in the air for 1s. What was its initial velocity ?

A particle is projected with a velocity of 20sqrt(3) m s^(-1) at an angle of 60^(@) to the horizontal.At the moment,the direction of motion of the projectile is perpendicular to the direction of initial velocity of projection, its velocity is?

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) .

A projectile is thrown with a velocity of 20 m//s, at an angle of 60^(@) with the horizontal. After how much time the velocity vector will make an angle of 45^(@) with the horizontal (in upward direction) is (take g= 10m//s^(2))-