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The path of a toy rocket fired into the air can be modelled by a parabola. The rocket, after being launched from the ground, reaches a height of 18 m after 6 seconds and the duration of the flight is 15 seconds.

Use algebra to show that the maximum height reached by the toy rocket is 18.75 m.



The answer uses h = kt(t - 15) as the correct equation, could someone explain how to get this?

As it is a parabola shouldn't it be y = ax^2 + bx + c or y = a(x - h)^2 + k instead?

 Nov 19, 2019

The following should help:


 Nov 19, 2019

wow, welcome back Eight MersennePrime!


After 2 years (checked your profile) you are back!

 Nov 20, 2019

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