Aball is thrown from a height of 160 feet with an initial downward velocity of 12/fts. the ball's height h (in feet) after t seconds is given by the following: h = 160 − 12t - 16t^2 how long after the ball is thrown does it hit the ground?

Aplane is flying at 32,500 feet. it needs to rise to 36,000 feet in two stages.• in stage 1, it rises 5% of its initial altitude of 32,500 feet.• in stage 2, it rises at a rate of 125 feet per minute.how many minutes does it take for the plane to rise during stage 2?