 #1
David112234
 105
 3
Homework Statement
A flowerpot falls off a windowsill and falls past the window below. You may ignore air resistance. It takes the pot 0.420 s to pass from the top to the bottom of this window, which is 1.90 m high.
Part A
How far is the top of the window below the windowsill from which the flowerpot fell?
Homework Equations
all kinematic equations
V=V_i + at^2
x=x_i + v_i(t) + .5 a(t)^2
V^2=V_i^2 + 2a (xx_i)
xx_i = (V_i + Vx)(t)(.5)
note, _i means initial
a= 9.802
The Attempt at a Solution
my free body diagram


_ x=1.90 + u V=0


_ x=1.90 V=? T=0




_ x= 0 V=? T= .420
I tried the second formula for final X position to find V at T=0
0= 1.90+V? (0) + (.5)(9.802)(0)^2
and I get
0=1.90 which is not correct
I can't use any any other formulas because I don't have the variables
what am I supposed to do, 1.90 is not the correct answer as I tried.
aslo I know someone else posted the same question from mastering physics, but I did not understand it well and I wouldl ike ot start from scratch