Have a friend hold a ruler by one end, letting the other end hang down vertically. At the lower end, hold your thumb and index finger on either side of the ruler, ready to grip it. Have your friend release the ruler without warning. Catch it as quickly as you can. If you catch the ruler 5.2 cm (~2.0 inches) from the lower end, what is your reaction time?
2007-09-17 12:25:02 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
It's a physics problem, to be honest.
distance = (1/2)acceleration * time^2
.052 m = (1/2)9.8 * t^2
.0106 = t^2
t = .103 seconds
2007-09-17 12:31:42 · answer #1 · answered by Anonymous · 1⤊ 0⤋
V(initial) = 0 m/s
a = -9.8 m/s^2
d = -0.952 m
d = V(initial) * t + 1/2 a * t^2
-0.052 = -4.9*t^2
0.01061... = t^2
t = 0.103 s
2007-09-17 19:33:55 · answer #2 · answered by lhvinny 7 · 0⤊ 0⤋
I'm sorry. But if any one is really good at writing equatiosn for solving for unknown y intercepts could they please answer this question. Sorry for not being able to answer your question, I am horrible at math.
http://answers.yahoo.com/question/index;_ylt=AoTf.cKtVUhNYcT5Xk7S3NACxgt.;_ylv=3?qid=20070917162416AADCySv
2007-09-17 19:34:47 · answer #3 · answered by Anonymous · 0⤊ 0⤋
t = (.052 * 2 / 9.8)^1/2
t = .103 sec
2007-09-17 19:32:24 · answer #4 · answered by GeekCreole 4 · 0⤊ 0⤋
WHAT?!?!? I don't get it!!!!!!!!!
2007-09-17 19:30:57 · answer #5 · answered by ♥ Meghan ♥ 3 · 0⤊ 0⤋