- #1
2ndperiod
- 4
- 0
Homework Statement
A ball is thrown horizontally from the top of a building 54.5 m high. The ball strikes the ground at a point 61 m from the base of the building.
The acceleration of gravity is 9.8 m/s^2 (9.8 meters per second squared)
1. Find the time the ball is in motion. (in units of s)
2. Find the initial velocity of the ball (in units of m/s)
3. Find the x component of its velocity just before it strikes the ground. (in units of m/s)
4. Find the y component of its velocity just before it strikes the ground.
HELP! please!
Homework Equations
Delta X = VX T
R = (Vsquared sin (2 x angle)) / g
Delta Y = (1/2) (Vyi + Vyf) (t)
Vyf = Vyi - (g)(t)
Delta Y = (Vyi)(t) - (1/2)(g)(Tsquared)
Vyfsquared = Vyisquared - (2)(g)(Delta Y)
The Attempt at a Solution
If someone could just tell me which formulas to use, that would be great. I know I need to solve for t for #1, and need to solve for Vyi for #2.