If an object is thrown vertically upward from a height of h 0 ft with an...

If an object is thrown vertically upward from a height of h ₀ ft with an initial speed of v ₀ ft/sec, then its height h (in feet) after t seconds is given by Make use of this formula in working Exercises 70–72.

One ball is thrown vertically upward from a height of 50 ft with an initial speed of 40 ft/sec. At the same instant, another ball is thrown vertically upward from a height of 100 ft with an initial speed of 5 ft/sec. Which ball hits the ground first?