how to write a matlab code for this physics problem?
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An airplane uses a parachute and other means of braking as it slows down on the runway after landing. Its acceleration is given by a=-0.0035 3v^2-3 m/s^2 . Since , a=dv/dt the rate of change of the velocity is given by: dv/dt=-0.0035v^2-3
Consider an airplane with a velocity of 300 km/h that opens its parachute and starts decelerating at t = 0 s. a. By solving the differential equation, determine and plot the velocity as a function of time from t = 0 s until the airplane stops.
Use numerical integration to determine the distance x the airplane travels as a function of time. Make a plot of x versus time.
2 个评论
Nick
2018-11-17
Looks a lot like a homework question, show us what you have tried so far.
sibel yalcin
2018-11-17
采纳的回答
madhan ravi
2018-11-17
编辑：madhan ravi
2018-11-17
t=[0 100] %arbitrary time range since we don't know when it reaches ground
x0=300;
opts = odeset('Events',@stopfunc) %it will stop integration when distance becomes zero
[t,x]=ode45(@myod,t,x0,opts)
plot(t,x)
time_when_distance_becomes_zero=t(x==0)
function dvdt = myod(t,x)
dvdt=-0.0035.*x(1).^2-3;
end
function [position,isterminal,direction] = stopfunc(t,x)
position = x(1); % The value that we want to be zero
isterminal = 1; % Halt integration
direction = 0; % The zero can be approached from either direction
end
2 个评论
sibel yalcin
2018-11-17
madhan ravi
2018-11-17
编辑：madhan ravi
2018-11-17
Anytime :) , if my answer helped make sure to accept the answer
更多回答（1 个）
Tarigoppula
2023-1-2
0 个投票
Resolve the horizontal 600lb force in fig a into components acting along the u and vaxes and determine of these components
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