Posted by Mo on Thursday, October 1, 2009 at 5:18pm.
A ball is thrown horizontally from the roof of a building 58.5 m tall and lands 38.7 m from the base. What was the ball's initial speed in m/s?
Hint: Find the horizontal velocity by calculating the time of flight and using the horizontal distance.

Physics(urgent)  bobpursley, Thursday, October 1, 2009 at 5:21pm
how long was it in the aIr?
h(f)=h(o)+vv*time  4.9 t^2
58.8=0+04.9t^2
solve for t.
now in the horizontal, you have the time, the distance, solve for the initial velocity
d=v*t
Answer This Question
Related Questions
 physics  A ball is thrown horizontally from the roof of a building 47.9 m tall ...
 Physics  A ball is thrown horizontally from the roof of a building 55 m tall ...
 physics  A ball is thrown horizontally from the roof of a building 59.0 tall ...
 physics  A ball is thrown horizontally from the roof of a building 33.0 m tall ...
 physics  A ball is thrown horizontally from the roof of a building 60 m tall ...
 Physics  I believe this is a projectile motion problem with the angle = 0 ...
 high school physics  a ball is thrown hirizontally from the roof of a building ...
 Physics urgent pls!  A ball is tossed from an upperstorey window of a building...
 physics  a ball is thrown horizontally > from the roof of a building 45.0 ...
 physics  A ball is thrown horizontally with an initial velocity of 20.0 m/s ...
More Related Questions