Ok- so how about a little help??


Question

An object inatially at rest experiences an acceleration of 2.0m/s (squared) for 6.0 seconds and then travels at that constant velocity for another 8.0 seconds

A) At what speed is the object traveling 10 seconds into the motion?
B)How far has the object traveled in the 14 seconds of motion deicribed?

What the hell do I care anyway..........I'm going fishing tomorrow.

Doc call me, I am suppossed to be on the water with a bunch of fools but if this really important I will be there. Please call !!!

Peace
Fly

It is 2 (m/s^2) Acceleration is distance over time squared.

Velocity = 0 + 2 (m/s^2) x 6 (s) = 12 m/s. Check my work please.

I sure as hell didn't see any cool kids around here.

So here is my question for the physics thread.
Why are the things in science fiction eventually developed? Are sci-fi writers psychic or do they create a tangible goal?

"Why are the things in science fiction eventually developed? Are sci-fi writers psychic or do they create a tangible goal?"

Sci-fi writers are time travelers from the future....or aliens.

Classic integral calculus.

The starting point to you question is given as acceleration. The integral of acceleration is velocity, and the integral of velocity is displacement. Conversely, if you were to go the other direction (differential calculus), velocity would be the derivative of displacement and acceleration would be the derivative of velocity. Simple Newtonian mechanics.

In math language:

Acceleration is constant = a
Velocity = a(t)+vo
Displacement = [a(t)^2] /2 + v(t) + do

Plug in the numbers. You guys have already solved the velocity question correctly, but no one has given the right displacement answer yet.

v(t) = 2 m/s (6 sec) + 0, (Plus zero because the object started from rest) = 12 m/s.

The displacement has to be solved in two parts, because the object is undergoing acceleration for the first 6 seconds, and travels at constant velocity for the remaining 8 seconds.

d1(v=0m/s,d=0m) = [2m/s^2(6 sec)^2] /2 + 0 m/s(6 sec) + 0 ft = 36 m

d2(a=0m/s^2, v=12m/s, d=36m) = [0m/s^2(8 sec)^2] /2 + 12 m/s(8 sec) + 36 m = 132 m.

An answer is only of value when accompanied by an explanation. Good day, gentlemen.

When the question said "accelerates at 2m/s (squared) I was thinking in exponential terms? Kinda like when you jump out of an airplane and gravity accelerates you at 32 feet per second, per second until you reach terminal velocity.

DanS gets an F

Impossible.

I'm not even registered in that class.

Spells too good for Solicious....

Notice pi was rounded to two decimal places.....lame!

Ok mr science, If I drop my beer