SOLUTION: A baseball is hit from a height of 0.8 m. After "t" seconds, its height "h", in metres, is given by the equation h=−5t2+20t+0.8. How long does the ball stay at least 15 m abo
Algebra.Com
Question 1006685: A baseball is hit from a height of 0.8 m. After "t" seconds, its height "h", in metres, is given by the equation h=−5t2+20t+0.8. How long does the ball stay at least 15 m above the ground? (5 marks)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
I want to solve for
use quadratic formula
sec
----------------
and, also
sec
-----------------
The difference in these times is the time period
when m
2.154 sec answer
----------------
Here's a plot of the equation:
RELATED QUESTIONS
A baseball is hit so that its height, h ( in feet), t seconds after it is hit can be... (answered by lwsshak3)
Height of a Baseball
The height h in feet of a baseball t seconds after being hit by a (answered by josgarithmetic)
4. A video tracking device recorded the height h, in metres, of a baseball after it was... (answered by ikleyn)
An emergency flare is launched from platform and its height h in metres after t seconds... (answered by ewatrrr)
The height of a baseball hit into the air is given by the quadratic equation... (answered by stanbon)
A football is kicked into the air. The height of the football is modelled by... (answered by ikleyn)
A baseball is hit to centre field. The ball’s height h, in metres, after t seconds can be (answered by Fombitz)
An object is thrown straight upward from the ground with an initial speed of 30 feet per... (answered by stanbon)
2. A toy rocket is fired into the air from the top of a barn. Its height (h) above the... (answered by Boreal)