Chapter 8.2, Problem 111ES

(a)

To determine

To calculate: The time $t$ taken by the rock to strike the ground when thrown out of a window by Travis while he was standing on the fourth floor of an eight-story building. The initial height was $60$ feet with an initial velocity of $0$ feet per second.

(b)

To determine

To calculate: The time $t$ after which the rock thrown from the roof by Courtney while standing on the roof of an eight-story building from an initial height $120$ feet with an initial velocity of $0$ feet per second to hit the ground.

(c)

To determine

To calculate: The time taken by the rock to hit the ground when the rock was thrown upward by Travis and Courtney from the window and roof of an eight-story building at $60$ feet and $120$ feet from the ground respectively with an initial velocity of $100$ feet per second and $60$ feet per second will hit the ground and further state whose rock will strike the ground first.

(d)

To determine

To calculate: The time at which both the rocks thrown by Travis and Courtney will be at the same distance from the ground.