- #1
Wanting to Learn
Homework Statement
Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.83 s after passing his window. Roger's room is on the third floor, 15 m above the sidewalk.
Part A:
How fast are the balloons traveling when they pass Roger's window? (express to 3sig figs with units)
Part B:
Assuming the balloons are being released from rest, from what floor are they being released? Each floor of the dorm is 5.0 m high. (Express answer as integer. Thus the balloons are coming from the floor number _.)
Homework Equations
d = .5(vf + v0)t
vf = 0m/s
v0 = ? m/s
t = 0.83s
d = 15m
The Attempt at a Solution
I plugged in:
15 = .5(0 + v)*0.83
15 = 0.415v
v = 36.14...
I assume units are m/s
When I put 36.1 m/s as the answer (homework is online) it said my answer is incorrect. Where did I do wrong with it?
(I will attempt part B once I have the correct answer for part A.)
Thank you in advance for helping.