5 an aircraft is at a height of 3500 m above sea level. at the same point, a submarine is at a depth of 1000…

5 an aircraft is at a height of 3500 m above sea level. at the same point, a submarine is at a depth of 1000 m below sea level. what is the vertical distance (in meters) between the aircraft and the submarine?\nnote: assume that the distance above the sea level is positive and below the sea level is negative.\na 1000\nb 2500\nc 3500\nd 4500
Answer
Explanation:
Step1: Assign signed values
Aircraft height: $3500$ m, Submarine depth: $-1000$ m
Step2: Calculate vertical distance
Vertical distance = $3500 - (-1000) = 3500 + 1000$
Answer:
D. 4500