Arock is shot from a catapult at the top of a mountain a height h above a level plain below. the rock is fired at an angle θ above the horizontal and with an initial vi.(a)find a symbolic expression in terms of the variables vi, g, and θ for the time at which the rock reaches its maximum height.

Explanation:

Let the time taken by the shot to reach to maximum height is t.

initial velocity, vi

angle of projection, θ

Acceleration, g

At maximum height, the vertical component of velocity is zero.

use first equation of motion in vertical motion

answer: the correct answer is   air pressure at the top of mount everest is higher than at the bottom of the grand canyon.

hope this : )

explanation:

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