Question

2

Answer 1

Answer: Initial height before launch

Step-by-step explanation:

Given

The equation $y=-9.8t+109.7t+7.4$  the height of toy rocket after t sec

when the rocket is launched, time is $t=0$

Substituting 0 for $t$ in the equation

$\Rightarrow y(0)=-9.8(0)+109.7(0)+7.4\\\Rightarrow y(0)=7.4$

Here, $7.4$ represents that rocket is already at a height of $7.4$ m before the launch.