# Calculus Problem Solving

**Calculus problem?**

*I have trouble solving this calculus problem! An object travels in a straight tunnel with acceleration. 4 m/s2. The tunnel* is 60 meters long, and takes 5 seconds in order to reach the final. Find the initial speed and instant speed when you have 20 meters left to go:. What I did was a (t) = 4 v (t) v = 4t + C1 (5) = 4 (5) + C1 = 0 C1 = -20 (this is the initial velocity I think) But my problem is that resolution second part, I have no idea what I have tried to do is: v (t) = 4t-20 s (t) = 2t ^ 2-20t + C2 do not know what to do after much appreciated! Any explanation be.

if the tunnel is 60 m long and it takes 5 seconds you can use the simple division of knowing that the average of the V is 12 miles per hour, which is exactly speed of 2.5 seconds in the tunnel. therefore 12 – (2.5 * 4) = V initial = 2 m / s, now that the initial V and the initial position, you can connect to the shall make its distance (derivitave of the equation of the speed) with C1 = 2, then you solve for D = 40 I would say that 40 = 2t ^ 2 + 2t + 0 (initial position) to solve t = -5 t = 4 because it is using the time, negative numbers can not be used to test t = 4: V medium for 4 to 5 seconds should be 20 m / s (because there are just 20 meters left to go in the tunnel at t = 4) with its acceleration be 4 m / s / s, this means that final v (t = 5) should be 22 m / s, yvyt = 4 should be 18 4 (acceleration) * 4 (time) + 2 (initial velocity) = 18 m / s 4 (acceleration) * 5 (time) + 2 (speed initial) = 22 m / s 22 m / s is the same speed you get from the equation of the drift speed let me know if that helps

**problem solving**

Wasting money on a handbag that turns out to be impractical, uncomfortable, or a poor fit with one

Superb blog! Do you have any helpful hints for

aspiring writers? I’m planning to start my own website soon but I’m a little

lost on everything. Would you propose starting with a free platform like WordPress or go for a paid

option? There are so many options out there that I’m totally

confused .. Any tips? Cheers!

Asking questions are really pleasant thing if

you are not understanding something totally, but this article presents nice

understanding even.

If you want to get a great deal from this paragraph then you have to

apply such techniques to your won blog.

wonderful points altogether, you simply gained a new reader.

What might you suggest about your submit that

you just made a few days in the past? Any sure?