A large explosion causes wood and metal debris to rise vertically into the air with an initial velocity of 144 feet per second. The function h ( t ) = 144 t − 16 t 2 gives the height of the falling debris above the ground, in feet, t seconds after the explosion. A) Use the given function to find the height of the debris 2 seconds after the explosion: After 2 seconds, the height is feet.

B) How many seconds after the explosion will the debris hit the ground? seconds.