Physics
posted by Katie .
At time t = 0, you shoot a cannonball horizontally from the roof of a building at a velocity of 10 m/s. The building has a height of 80 m. Assume g = 10 m/s2 and that there is no air resistance.
Write down the algebraic velocity equation for the ydirection of the ball with any given values substituted.
Write down the algebraic position equation for the ydirection of the ball with any given values substituted.
So I need to equations for vertical velocity (Vy) and vertical position (y)

1. V^2 = Vo^2+ 2g*d.
V^2 = 0 + 20*80 = 1600
V = 40 m/s^2.
2. h = ho  0.5g*t^2
h = 80  5*(0)^2 = 80 m.
80  5t^2 = 0
5t^2 = 80
t^2 = 16
t = 4 s. = Fall time.
Respond to this Question
Similar Questions

Physics
A cannonball is fired horizontally from a 240 high cliff toward a vertical building 540 away with an initial velocity of 90.0 . When the ball will hit the building? 
physics
Frank stands at the base of a building. He throws a 0.12kg rock straight up at a speed of 28m/s so that it rises to a maximum height of 12m above the top of the building and then falls straight down on the roof of the building. a) … 
Physics Gr.11
Frank stands at the base of a building. He throws a 0.12kg rock straight up at a speed of 28m/s so that it rises to a maximum height of 12m above the top of the building and then falls straight down on the roof of the building. a) … 
physics
A cannonball is fired horizontally from a 240 {m}high cliff toward a vertical building 720 {m} away with an initial velocity of 120 {m/s}. When the ball will hit the building? 
Physics
At time t = 0, you shoot a cannonball horizontally from the roof of a building at a velocity of 10 m/s. The building has a height of 80 m. Assume g = 10 m/s2 and that there is no air resistance. Write down the algebraic velocity equation … 
Physics
A ball is thrown horizontally at 12.2 m/s from the roof of a building and lands 21.0 m from the base of the building. How high is the building? 
physics
Stones are thrown horizontally, with the same initial velocity, from the tops of two different buildings, A and B. The stone from building A lands 4 times as far from the base of the building as does the stone from building B. What … 
physics
Stones are thrown horizontally, with the same initial velocity, from the tops of two different buildings, A and B. The stone from building A lands 4 times as far from the base of the building as does the stone from building B. What … 
physics
A ball thrown horizontally at 13.0m/s from the roof of a building lands 21.4m from the base of the building. How tall is the building? 
Physics
A hammer is thrown horizontally from the flat roof of a tall building at a velocity of 10m/s and hits the ground below after 5 seconds. (a) How high is the roof?