Chapter 12, Problem 33RE

(a)

To determine

To calculate: The rate at which the distance apart is decreasing when Major Duffin is walking north towards the corner entrance of the company headquarters at $5\text{ft}/\sec$, while John O Hagan is walking west towards the same entrance, also at $5\text{ft}/\sec$ and each of them is $2\text{ft}$ from the corner

(b)

To determine

To calculate: The rate at which the distance apart is decreasing when Major Duffin is walking north towards the corner entrance of the company headquarters at $5\text{ft}/\sec$, while John O Hagan is walking west towards the same entrance, also at $5\text{ft}/\sec$ and each of them is $\text{1ft}$ from the corner

(c)

To determine

To calculate: The rate at which the distance apart is decreasing when Major Duffin is walking north towards the corner entrance of the company headquarters at $5\text{ft}/\sec$, while John O’Hagan is walking west towards the same entrance, also at $5\text{ft}/\sec$ and each of them is $h\text{ft}$ from the corner

(d)

To determine

To calculate: The rate at which the distance apart is decreasing when Major Duffin is walking north towards the corner entrance of the company headquarters at $5\text{ft}/\sec$, while John O’Hagan is walking west towards the same entrance, also at $5\text{ft}/\sec$ and each of them collide on the corner.