Question

Sigh..one more:
Related rates, Problem in attachment.

Answer 1

Having trouble setting this up correctly.

Answer 2

Brb

Answer 3

1+x^2=r^2

differentiate with respect to time, solve for dx/dt and plug in the givens
compare the value you get for dx/dt with the velocity of the plane to find the car's speed...

Answer 4

@Algebraic! thank you for this approach. I tried solving this problem the same way, but was stuck because i thought "r" was unknown.

I'm guessing you would suggest solving for r with pythagoras but can we really just assume that height=1 here?

Answer 5

yes and r= sqrt(1 +1.5^2)