First day of the unit, and they assign me homework and I have absolutely no clue where to start. I would assume that I can't just post my question and get an answer which is fine, I would honestly just like some help. I'm in Grade 11 btw and I'm doing quadratics atm.
A quarterback throws a football. The height, h metres, of the ball is given by the equation h = −5t2 + 20t +2 where t is the time in seconds after the ball is thrown.
c) What is the height of the ball 1 second after it is thrown?
d) What is the maximum height of the ball?
e) How long does it take for the ball to reach the maximum height?
f) For how long is the ball more than 10 m above the ground?
A quarterback throws a football. The height, h metres, of the ball is given by the equation h = −5t2 + 20t +2 where t is the time in seconds after the ball is thrown.
c) What is the height of the ball 1 second after it is thrown?
d) What is the maximum height of the ball?
e) How long does it take for the ball to reach the maximum height?
f) For how long is the ball more than 10 m above the ground?
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