An object is launched horizontally at a velocity of 19 m/s from the top of a building. It falls vertically a distance of 24m before it reaches the ground. How long does this projectile travel before reaching the ground?
Question
Question
An object is launched horizontally at a velocity of 19 m/s from the top of a building. It falls vertically a distance of 24m before it reaches the ground. How long does this projectile travel before reaching the ground?
Answer:
2.2 s
Explanation:
His vertical initial velocity u =0
vertical displacement h = 24 m .
vertical acceleration g = 9.8 m /s²
h = ut + 1/2 gt²
24 = 1/2 x 9.8 x t²
t = 2.2 s .
Time of fall = 2.2 s