Question

In kickboxing, it is found that the force, fneeded to break a board, varies inversely with the length, of the board. If it takes 8 pounds of pressure to break a board that is 3 feet long, how long is a board that requires 5 pounds of pressure to break?

Answer 1

The board with a length of 4.8 feet would require 5 pounds of pressure to break.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables. An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.

Let p represent the pressure and l represent the length.

l ∝ 1/p

l = k/p (k is constant)

When l = 3, p = 8, hence:

3 = k/8

k = 24

For p = 5:

l = k/p = 24/5 = 4.8 feet

The board with a length of 4.8 feet would require 5 pounds of pressure to break.

Find out more on equation at: brainly.com/question/2972832

#SPJ1