Question

"A projectile is fired horizontally at 14.9 m/s from the edge of a 7.05-m-high cliff and strikes the ground. Find the horizontal distance the projectile traveled."

I have no work cause I have no idea how to do this...

Answer 1

u = horizontal speed = 14.9 forever
now vertical problem, simply drop from 7.05 m
-h = -(1/2)gt^2
7.05 = 4.9 t^2
t = 1.2 seconds to fall
how far horizontal in 1.2 seconds?
x = 14.9 * 1.2