Ok.....they give you an initial velocity that a cannon ball is fired out of a cannon from and they give you a height for a cliff. They make you solve for time, horizontal distance, and final resultant velocity. They then ask, which of the following will be UNAFFECTED by a decrease in initial velocity.
Atime
Bhorizontal distance
Cfinal resultant velocity
I wasn't sure. I know it's not C, but stuck between A and B. Can you provide some reasoning ?
2006-10-11 07:58:43 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
we believe that it is answer b, Horizontal distance (good luck)
2006-10-11 08:02:38 · answer #1 · answered by ojay 2 · 0⤊ 0⤋
Um, I would have thought everything would have been affected. The only pausible answer is C final resultant velocity because if the cliff was high enough, it was reach a constant terminal velocity.
If you decrease initial velocity, the X component of the velocity becomes smaller and you go a shorter distance.
The time in the air would also be smaller because the Y component of the velocity would also be smaller and the cannon would spend less time in the air.
2006-10-11 15:07:18 · answer #2 · answered by leikevy 5 · 0⤊ 0⤋
I would have to say A. time. If initially velocity is higher, then it will go farther. The resulting velocity will just be the rate of falling with gravity, which will depend on the height of the cliff. So, process of elimination tells me A.
2006-10-11 15:04:10 · answer #3 · answered by martin h 6 · 0⤊ 0⤋
It's C. No matter what you do with the other numbers, the final velocity will be 0. It will always stop. If it goes out faster, it will go farther and be in the air longer.
2006-10-11 15:09:40 · answer #4 · answered by scriptorcarmina 3 · 0⤊ 0⤋