A Rock Is Propelled Upward from the Top of a Building

question 415

Multiple Choice

A rock is propelled upward from the top of a building 170 feet tall at an initial velocity of 168 feet per second. The function that describes the height of the rocket in terms of time t is $s ( t ) = - 16 t ^ { 2 } + 168 t + 170$ Determine the
Maximum height that the rock reaches.

• A) 630 ft
• B) 592 ft
• C) 579 ft
• D) 611 ft