solve the equation.
\(6 = -4.9t^2 + 14t - 0.4\)
Hint : it is a quadratic. Take it all to one side and use the quadratic formula.
The height will be above 6m between the time periods.
And for peats sake no one rush in a give a full answer.
This forum is supposed to help people learn!
Asker if you have problems you can show what you have done and maybe we will help you more.
Please do not delete your questions. Someone could have been working on it.
Just make a new post saying that you have your answer, but also thank anyone who had already donated any of their time.
You could even give the final answer or an outline of how you solved it.
Maybe someone else will learn from you !
Mathematics is used for just about everything.
e.g. Surveying and cartography is almost solely based on trigonometry.
Engineering is almost entirely maths and physics and the properties of materials.
Without engineering you would have no modern bridges or scyscrapers or airoplanes or just about anything else that makes up our modern existance.
If you want to know EXACTLY how then study hard and the facts will be revealed.