Recent content by mathkid3

a = (0-85) / 2deltax what is delta x ? I can only get to the above and/or if I ignore delta x I would get something like acceleration = -42.5 or deceleration is this casehelp Mark!

Re: Algebra/Physics problem distance?

An archer fires an arrow, which produces a muffled "thwok" sound after it hits a target. If the archer hears the "thwok" exactly 3.0 s after firing the arrow and the average speed of the arrow was 33 m/s, what was the distance sepa*rating the archer and the target? Use 340 m/ s for the speed of...

A light plane must reach a speed of 33 m/s for takeoff. How long must the runway be if the plane has a constant acceleration of 3.8 m/s2 ?so, I am new to kinomatic equations. We are using the 4 Basic ones. need to see this one worked out if I may.Thanks

Find the acceleration of a car that comes to a stop from a velocity of 100 m/s in a distance of 410 m.Answer: -24.39 The answer has been given back to me as incorrect is this because I inputed a negative value and acceleration cannot be negative?Thanks!

wow...I made the changes and they were easy changes I missed the new values Mark is 10.8803,11.1203 y function values are as follows 10.88 and 11.12 Thanks Mark! What would I ever do without you? Think on my own ? (Envy)

so like this... f(1.99) = 3(1.99)-1 = 4.97 f(2.01) = 3(2.01)-1 = 5.03 and y(1.99) = 12(1.99)-1 = 22.88 y(2.01) = 12(2.01) - 1 = 23.12Is this right fellas?(Thinking)

hi, Thanks for your help here. I am only in an Elementary Calculus 1 class and where I am sure your answer is correct...they have not introduced us to the formula you use. What they have done is give us the following formula and I wanted to ask if you could respond again, taking this basic...

Mark, so glad you are on this site and you have already helped me so much with understanding some of these Calculus problems. ok ..let's see... You said first to find the derV of p so I get (x-1000)/(x^3) next you say find p(5)/(5) Areyou saying to plug 5 into the original...

I am asking for simple guidance on this problem. f(x) = 3x^2-1, (2,11)I do believe I need to obtain an equation for tan line so first step I think is to use point slope or slope intercept (a friendly reminder to the name of formula would be very nice :)) y - ysub1 = m(x-xsub1) = y -...

The demand function for a product is given by p = 800 -4x, 0 <= X <= 200, where p is the price (in dollars) and x is the number of units. (a) Determine when the demand is elastic, inelastic and of unit elasticity. (b) Use the result of part (a) to describe the behavior of the revenue...

Find price elasticity of demand for the demand function at the indicated x-value. Is the demand elastic, inelastic or of unit elasticity at the indicated x-value? Use a graphing utility to graph the revenue function, and identify the intervals of elasticity and inelasticity. ... I will list...

Mark, sorry I fell asleep on couch last night while chatting with you on the forum. I had to get coffee in me to start to re what we were doing last night :) ok I have questions. #1 how did I get so lost in the problem from the start?? I think it was from asking your help you...

I was just thinking by the way u said it that z = -1is it that z must be positive ?

wait is Z = -1 ?