How do u code this I’m having a really hard time understanding when to use if, else if and else statements?

Question

Write a program that that computes and plots the acceleration profile of racecar. The racecar's acceleration can be approximated as piecewise linear.

a(t)=kt+c

where t is time in seconds, k is the slope of the acceleration profile, and c is the y-intercept of the acceleration profile. The constants change depending on how the accelerator or brake of the vehicle are pressed. They are defined by Equations 2 and 3, with the specified time intervals.

k={ 6m/s^2 0s<=t<=3s

0m/s^2. 3s<=t<=5s

10m/s^2. 5s<=t<=7s

-3.1m/s^2 7s<=t<=10s}

c={ 0m/s^2 0s<=t<=3s

6m/s^2. 3s<=t<=5s

0m/s^2. 5s<=t<=7s

-10.8m/s^2 7s<=t<=10s}

Using the given information, write a script that specifically: Uses a for-loop to compute the time variable and the acceleration variable. Uses an if-elseif-else statement nested inside the for-loop to control which constants are used for the acceleration function. Uses an increment of delta t =- 0.125 seconds between successive points in the time array. • Plots the acceleration profile of the racecar versus tune with a fully documented plot.

Output must be:

An array called "t" for time An array called "A" for acceleration.

Answer 1

Hello Lilly,

to start this problem you need to create a time vector. You can use something like "t = 10:-0.125:0" to do what the problem asks for. Then you can loop over the elements of this vector by using something like " for i = 1:length(t)", and inside this loop you use the if-else if statements to account for the different time intervals. For example, you use "if t(i) < = 3 " as one condition, and then elseif " t >3 & t<=5" and so on.

Hope this helps!

Best,

Ibrahim