The question is
what would the 4.23 x 10to the 8th power kg ship have imparted to the iceburg if it had hit the iceburg head on with a speed of 11.6 m/s? b)if the captain of the ship had seen the iceburg a kilometer ahead and had tried to slow down, why would this have been a futile effort?
PLEASE HELP!
2006-09-26 14:31:03 · 2 answers · asked by 128333 4 in Education & Reference ➔ Homework Help
dudette, no help.
2006-09-28 06:47:47 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The first equation one learns is physics class is:
F=ma
Force = mass * acceleration
That is what the first part of your question deals with.
The second part deals with momentum.
The equation for momentum is momentum = mass * velocity
Yes these seem like the same things, but they're not. Velocity is a vector quantity.
You experience momentum and a concept which deals with what the second part of the question is asking everyday--well, if you drive. How do know whether or not you can make it through the intersection when the traffic light turns yellow or if you need to stop. In other words, could you brake in time to stop. Your brain calculates your momentum compared to your vehicle's braking ability by using your experience as a driver. All physics does is make you mathematically describe what it is that your brain does in a split second. Still don't believe me. Have a friend throw a wad of paper to you and then lob or just toss a wad of paper to you. In an instant you know where to put your hand. Wow, in that instant you just calculated the momentum of the wad of paper and extrapolated that informatin into picturing a parabolic arc so you knew where to put your hand in order to try and catch the paper. Not even a calculator could have done all that as quick as your brain.
If you want the answer written out, send an e-mail. But, I think you have enough now to figure it out on your own.
2006-09-27 00:25:17 · answer #2 · answered by quntmphys238 6 · 0⤊ 0⤋