Why the motion of oblique projectile becomes horizontal at the highest point?

Which one has the highest boiling point?

A liquid surface is horizontal. why?

Which has the highest free zing point ?

A projectile is fired at an angle of 45^@ with the horizontal.Elevation angle of the projectile at its highest piont as seen from the point of projection is :

What is a projectile? What do you understand by trajectory? Show that motion of a projectile fired horizontally is a prabola.

Which of the following aqueous solutions should have the highest boiling point ?

A player throws a ball upwards with an initial speed of 29.4 m s^-1 :- What are the velocity and acceleration of the ball at the highest point of its motion ?

A particle slides down a frictional parabolic (y=x^(2)) track (A-B-C)starting from rest at point A (shown in the figure).Point B is at the vertex of parabola and point C is at a height less than that of point A.After C, the particle moves freely in air as a projectile. If the particle reaches highest point at P,then

Which of the following element has the highest melting point ?