Posted by gagan on Thursday, January 22, 2009 at 5:59pm.
A water balloon is shot into the air so that its height h, in metres, after t seconds is
h = —4.9t^2 + 27t + 2.4
a)How high is the balloon after 1 s?
b)For how long is the balloon more than 30 m high?
c)What is the maximum height reached by the balloon?
d)When will the balloon hit the ground?

Math  Writeacher, Thursday, January 22, 2009 at 7:06pm
To quote one of our very good math and science tutors: “You will find here at Jiskha that long series of questions, posted with no evidence of effort or thought by the person posting, will not be answered. We will gladly respond to your future questions in which your thoughts are included.”

Math  gagan, Thursday, January 22, 2009 at 8:33pm
sorry i would not do that again
but can you please answer these questions because i really need them because i have a exam tommorow at 1 pm. i posted them in a series because i have so less time to study, that i was not even thinking write and i just posted them all but can you plz plz plz answer this i really need it.
Answer This Question
Related Questions
 math  A water balloon is shot into the air so that its height h, in metres, ...
 Math Grade 11 U  A water balloon is catapulted into the air so that its height...
 physics  a hotair balloon having initial velocity vi as it ascends. Then, a ...
 interoduction of aeronautical engineering  Others say that the balloon was 23 ...
 Physics  After rubbing a balloon against someone's hair, a balloon has ...
 physics  A helium balloon has a mass of 0.022 kg, which includes both the ...
 math  A hot air balloon was at a height of 60 feet above the ground when it ...
 physical science  A hot air balloon is rising upwards at a constant velocity of...
 Math/calculus  a toy rocket is shot into the air at the top of a building so ...
 Math  the function is h(t)= 4.9t^2+2t+45 (t represents time in seconds and h ...
More Related Questions