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Question 3 (2d motion) The zero-launch-angle case is a set of situations when the launch angle is zero degree or j horizontal. Further, the projectile is launched off of a cliff or the side of a table so that it can fall Let the height of the cliff be H and the initial speed of the projectile be vi. a. Derive a shortcut equation for the flight time T as a function of H and vi b. Derive a shortcut equation for the horizontal distance R traveled as a function of H and vi

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Answer #1

a)

time of flight is given by 2nd equation of motion

h = 0.5 gt^2

H = 0.5* 9.8* T^2

T = [ 0.204 H ] ^0.5

=======

b)

Horizontal distance

d = Vi * T

d = [ 0.204 H ] ^0.5* Vi

============

do comment in case any doubt, will reply for sure.. that

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