If an object is dropped from a height of 144 ft, the funtion "h(t)= -16t^2+144" gives the height of an object after bla bla bla bla bla! the answers are 1.5, 3, 6, and 9! which one is it?

Question

anonymous · Answer

the "bla bla bla bla bla!" part may be important

anonymous · Answer

when will it hit the ground

anonymous · Answer

t=3 seconds

anonymous · Answer

thanks

anonymous · Answer

can you solve a few more for me?

anonymous · Answer

shoot

anonymous · Answer

A ball is thrown in to the air with an upward velocity of 28 ft/s. It height (h) in feet after t seconds is given by the function h= -16t^2+28t+7. How long does it take the ball to reach its maximum height? What is the balls maximum height?

anonymous · Answer

it takes $$t=\sqrt{\frac{28}{3}}sec$$ to reach its max
evaluate at that time to get the maximum height