- #1
ShizukaSm
- 85
- 0
Homework Statement
There's a short introduction saying that honing missiles can determine their position by utilizing their acceleration, then the problem says: Suppose that the missile's acceleration obeys the following equations:
[tex]
\\
a_x = 0.8\\
a_y = -6.0 - 3.0t
[/tex]
Knowing that, in [itex]t = 0[/itex], [itex]v_x = 600 km/h[/itex] and [itex]v_y = 0[/itex], calculate the missile's displacement in ten seconds. (Answer is 2.2km)
Homework Equations
Just the equations already provided.
The Attempt at a Solution
Alright, so, what I tried to do was integrating the acceleration two consecutive times to arrive at an equation for x(t) and y(t), which gave me:
[tex]
\\
x(t) = 0.4 t^2 + 600t + x_o\\
y(t) = \frac{-1}{2}t^3 - 3t^2 + y_0
[/tex]
Then I attempted to get the displacement of both axes(Using time = 1/360h, since I have to convert 10 seconds to hours):
[tex]
\\
x(10)-x(0) = 1.67km\\
y(10)-y(0) = -2.3*10^{-5} km
[/tex]
And then, by calculating[itex]sqrt(x^2 + y^2) [/itex]I obviously get pretty much 1.67km, which is wrong.