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accelerates upward at 3.0 m/s^2 What is the diver's depth when the cork reaches the surace 2.0 s later

2006-09-13 16:56:57 · 4 answers · asked by Anonymous in Science & Mathematics Physics

4 answers

Allright, we know acceleration of the cork, initial speed of the cork (1 m/s down), and time to hit surface. We do _not_ know starting depth of the cork. We need to figure that out. 2 seconds later, the diver will be 2 m deeper then the initial depth of the cork.

You've probably seen the formula for motion acceleration/2 X t^2 + initial velocity X t + initial position. (if/when you hit calculus, that's actually just accleration = a constant integrated twice with respect to time .... anyway)

we know that 3/2X t^2 + (-1)Xt - initial depth = 0 when t = 2 (i assume initial depth is less then 0, and the -1 represents moving down 1 m/s initially).

sot ... 3/2X2X2 -1X2 = initial depth
initial depth is 4.

2 seconds later, diver is 6 m down.

2006-09-13 17:05:47 · answer #1 · answered by kheserthorpe 7 · 0 0

11 m

2006-09-14 00:03:37 · answer #2 · answered by Tim _ 1 · 0 0

These are all nonsense questions from josh. Don't answer them. It will only encourage him.

2006-09-14 00:02:27 · answer #3 · answered by ? 6 · 0 0

I don't know what the hell your talking about but I wanted to post because you have my name.

2006-09-13 23:59:23 · answer #4 · answered by josh w 2 · 0 0

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