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jheld
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Homework Statement
In a military test, a 575 unmanned spy plane is traveling north at an altitude of 2700 and a speed of 450 . It is intercepted by a 1280 rocket traveling east at 725 .
If the rocket and the spy plane become enmeshed in a tangled mess, where, relative to the point of impact, do they hit the ground? Give the direction as an angle east of north.
Homework Equations
F = ma
p = sqrt((m_1v_1)^2+(m_2v_2)^2)
vinitial = p/sum of m
sf = si + vi*t +1/2a*t^2
The Attempt at a Solution
I found Vinital by doing v = p/m, and got 519.352 m/s.
then i plugged that value into yf = yi + vi*t + 1/2a*t^2, and using yf = -2700.
then i used the quadratic formula to solve for t, and using the negative root (because of logistics) and ended up with t = 4.966 seconds.
then plugged that into xf = xi + vi*t, and ended up with 2.58 km.
the answer should be 12.2 km. so, I'm not sure what I am doing incorrectly.