



 
Hi Claire, Put a coordinate system on the plane with the origin on the ground, directly below the airplane at the instant the supplies are released. Suppose the position of the package $t$ seconds after it is released is $(x(t), y(t))$ where the distances are measured in feet. Convert 300 miles per hour to feet per second. Consider the $y$ coordinate first. Looking only at $y$ and ignoring air friction you have $y(0) = 3500$ feet and the force operating on the package is the force due to gravity. What is the $y$ coordinate, $t$ seconds after it is released? What is the time $t$ when $y(t) = 0?$ Now consider the $x$ coordinate. Again ignoring air friction the package moves in the $x$ direction at a constant rate of 300 mph (in feet per second). Write this as an expression $x(t) = ???.$ What is the value of $x(t)$ when the package hits the ground? I hope this helps,  


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