(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.00m/2 at an angle if 20 degrees below the horizontal. It strikes the ground 3s later.

(a) How far horizontally from the base of the building does the ball strike the ground?

(b) Find the height from which the ball was thrown.

(c) How long does it take the ball to reach a point 10m below the level of launching?

2. Relevant equations

not sure about these:

h=1/2gt^2

Vf - Vi = gt

Yf = Yi + Vi + (at^2)/2

3. The attempt at a solution

Well I started drawing a diagram with some point h on the y-axis and a line with a negative slope from some point h (on y-axis). This line hits x-axis at 3s, Vf = 0m/s. I was trying to find the height and used the above equation and got 44.1 and tried to find the horizontal distance.. i got 88.2 but i dont think thats right.. please help! thanks =]

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Motion in 2 Dimensions homework problem =]

**Physics Forums | Science Articles, Homework Help, Discussion**