Part C: Use the result from Part B to evaluate the value of horizontal position of the pumpkin trajectory, xm, at which the slope of y(x) is 0.
Part C: Use the result from Part B to evaluate the value of horizontal position of the pumpkin trajectory, xm, at which the slope of y(x) is 0.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Part C: Use the result from Part B to evaluate the value of horizontal position of the pumpkin trajectory, xm, at which the slope of y(x) is 0.

Transcribed Image Text:Part A
A student club is designing a trebuchet for launching a pumpkin into projectile motion. Based on an analysis of their design, they predict that the trajectory of the launched pumpkin will be parabolic and described by the equation y(x) = ax² + bx where a = −8.0 × 10−³ m¯¹,
b = 1.0 (unitless), x is the horizontal position along the pumpkin trajectory and y is the vertical position along the trajectory. The students decide to continue their analysis to predict at what position the pumpkin will reach its maximum height and the value of the maximum height.
What is the derivative of the vertical position of the pumpkin trajectory with respect to its horizontal position?
View Available Hint(s)
O
dy
dx
dy
dx
-= 2ax + b
dy
dx
2ax
dy
dx
= ax
= 0
Submit Previous Answers
Correct
In order to evaluate the maximum of a function a first step is to obtain the derivative of the function.

Transcribed Image Text:Part B
In order to find the value of the horizontal position of the pumpkin for which its height is a maximum, we need to seek values of xm for which:
► View Available Hint(s)
dy
dx
dy
dx
dy
dx
=
y(x)
Submit
-
-
2axm+b has its minimum value, which must be determined by obtaining
2axm+b=0
n² +b=0
2
= axm
2axm + b = ymax, which will be determined in the next step of the analysis
Previous Answers
d²y
dx²
Correct
The derivative of a function (its slope) is 0 at maxima and minima of the function.
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