Physics

I have these two equations that I'm supposed to set equal to each other and find the answer for h which is height for this problem. But I don't think I'm solving it correctly.

0 - (h/5) = -1.1(v0) - (1/2)(-9.8)(1.1)^2

(v0)^2 = 2(-9.8)(h/5 - h)

My final answer was h = 412.90 to two significant figures so that's: 4.1 * 10^2

But MasteringPhysics says its incorrect. What's the real answer? And what am I doing wrong?

  1. 👍 0
  2. 👎 0
  3. 👁 101
asked by Kai
  1. I can't tell, but I suspect you have signs all messued up.

    Down is -, + is up. In the first equation, is vo down orup? why is the sign before 1/2 -, then another - before 9.8. I can't help more than this, but is suspect it is signs in the first and second equation.

Respond to this Question

First Name

Your Response

Similar Questions

  1. Calculus

    Find the parametric equations for the line of intersection of the planes x+y+z=3 and x-y+2z=2 I took the cross product of the 2 equations and got 3i-j-2k I then set z=0 and got x=5/2 and y=1/2. I got: x=5/2 +3t y=1/2-t z=-2t

    asked by Mackenzie on December 4, 2012
  2. Calculus

    Find the parametric equations for the line of intersection of the planes x+y+z=3 and x-y+2z=2 I took the cross product of the 2 equations and got 3i-j-2k I then set z=0 and got x=5/2 and y=1/2. I got: x=5/2 +3t y=1/2-t z=-2t

    asked by Mackenzie on December 4, 2012
  3. Managerial Econ

    How do you get P=12.4-4Qd to equal P=-2.6+2Qs? You have to find the equalibrium so you have to set Qd=Qs so I can't figure out how to get p in the equations and the equations to equal Qd & Qs.

    asked by Rachel on September 5, 2007
  4. Pre-Calculus

    You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the unit price for x items. −p+0.0208333333333333x+2=0 and p = √(57-x) What is the market equilibrium for

    asked by Ann on October 9, 2013
  5. math

    9x+5greater than or equal to -40 or 7x+3greater than or equal to -11 solve and graph I got the answer of x greater than or equal -5 or x is greater than or equal to -2 as the solution to this equations, but how do i put this into

    asked by Jen on January 29, 2010
  6. PreCalc (still confused)

    Hello and Happy Halloween! Trying to get this problem and could use some help. Find the dimensions of the rectangle with minimum perimeter if its area is 400 square meters. Find the least perimeter. I know that a rectangle has two

    asked by Muffy on November 1, 2009
  7. Math

    How do you find the point of intersection(s) for x = 2y2 + 3y + 1 and 2x + 3y2 = 0 A) You cannot find points of intersections for non-functions. B) Plug in 0 for x into both equations and solve for y. Then plug that answer back

    asked by Andrew on February 12, 2016
  8. Math

    How do you find the point of intersection(s) for x = 2y2 + 3y + 1 and 2x + 3y2 = 0 A) You cannot find points of intersections for non-functions. B) Plug in 0 for x into both equations and solve for y. Then plug that answer back

    asked by Asia Powell on February 9, 2016
  9. Calc

    Describe the given set with a single equation or with a pair of equations. The set of points in space that lie 2 units from the point (0,0,1) and, at the same time, 2 units from the point (0,0,-1). I wrote distance equations for

    asked by Anon on August 25, 2015
  10. Math

    Write a set of parametric equations in Quadrants I and IV for a semi-circle with a radius of 10. I'm kind of new at parametrics, so this is what was given to me: (x-h)^2 + (y-k)^2 = r^2 x^2 + y^2 = r^2 r = 10, y = rsint, x=rcost

    asked by Momo on April 22, 2009

More Similar Questions